Can two male rats be in the same cage?

Male or Female Rats?

Best Answer

Rats are more than just cage pets.

Rats of the same sex (or altered) will live together fine if they grow up together or are properly introduced.

However, a small percentage of males develop too much testosterone and become aggressive.

Having them neutered will reduce the aggression within 8 weeks of the surgery.

How to Introduce Rats

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Related Questions

Can two puppies be born in the same sac?

Dogs give birth to multiple puppies at a time, so technically every puppy in a litter is a twin. Identical, or monozygotic twins, come from the same egg, and therefore share a placenta and, often, an amniotic sac.

Can you put parakeets and finches in the same cage?

Finches and parakeets are both very active birds. However, parakeets love to climb, while finches tend to fly. Cage recommendations, therefore, are different for each bird. If you house them together, you need a large cage that is both tall and wide.

Can two female dogs live in the same house?

Two female dogs thrust together often cannot establish a stable pack order. And believe it or not, females are more likely to fight to the death than males are. You can consider a dog of the same breed, but opposite gender as your current dog.

Why rats can NOT be kept alone

Can you have the same primary key in two tables?

First when two tables have the same Primary Key and have a foreign key relationship, that means they have a one-to-one relationship. If the information contained in the second table relates to a separate specific concern, it makes it easier to work with it the data is in a separate table.

Do rats stay in the same place?

Rats can live in burrows up to three meters deep but when the first frost sets in and food becomes scarce they can be forced to leave their home and seek an alternative nesting site. If you have rats nesting nearby and there is an entry point to your home or premises, there is a real threat from a rodent invasion.

Can you adopt two puppies from the same litter?

The most common reason given for not adopting two pups from the same litter is that they will “bond better” with each other than with you. I suspect this indeed does have to do with social bonding to some extent, but I have seen pups of a duo who clearly adored their humans. Adored them.

Should two dogs sleep in same crate?

Even if dogs are crated separately, it's a good idea to place their crates in the same room so they can keep each other company. When two dogs share a crate while their owner is away, they're trapped. Some dogs find snuggling up to sleep against another dog quite cozy!

Can I get two dogs from the same litter?

Taking on two puppies from the same litter often results in what is known as littermate syndrome. The pups may not show obedience and will exhibit anxiety when they are separated from each other. The dogs could also become aggressive towards each other, especially if they are both female.

When rats do not get along...

Can you wear two Fitbits at the same time?

Fitbit Wearers Can Now Use Multiple Devices. Fitbit just rolled out a small but significant update that gives Fitbit users the ability to use multiple devices on the same account. A person could wear a Fitbit Flex to work and then a Fitbit Surge at the gym. You know, business during the day and party at night.

Can you keep two puppies from the same litter?

Taking on two puppies from the same litter often results in what is known as littermate syndrome. The pups may not show obedience and will exhibit anxiety when they are separated from each other. The dogs could also become aggressive towards each other, especially if they are both female.

Can you train two puppies at the same time?

Train them individually: When training two puppies, the dogs should attend training classes separately. Alternatively, if you're training at home, work with one dog while the other is with a human family member in a separate room. Walk them one at a time: Give each dog your undivided attention on his own daily walk.

Can you use two insurance plans at the same time?

The other plan can pick up the tab for anything not covered, but it won't pay anything toward the primary plan's deductible. If both plans have deductibles, you'll have to pay both before coverage kicks in. You don't get to choose which health plan is primary, meaning the one that pays first.

Can you raise two puppies at the same time?

In general, she says, it's more difficult to adopt two puppies at once. Two puppies might be more likely to bond to each other, rather than to their new human family. Puppies adopted together might be anxious or timid when separated. Dogs are individuals, so each puppy will learn and train at his own speed.

Introducing two male rats

Can you have two puppies from the same litter?

The most common reason given for not adopting two pups from the same litter is that they will “bond better” with each other than with you. This intuitively makes sense, in that the pups have already had the closest and most intimate experience with each other, and often during important phases of socialization.

Can two male dogs coexist?

Generally speaking, opposite sex dogs do better together. In the case of two males, the dominant dog will become more dominant than he would have been on his own, and the submissive dog may become much more so. And believe it or not, females are more likely to fight to the death than males are.

Can you mate two dogs from the same litter?

When siblings mate, new genetic defects may present in their offspring. When two dogs born in the same litter mate, the likelihood that their offspring will have the same traits they have. However, it can also increase the offspring's risk of disease or disability, too.

Can you get two puppies from the same litter?

If you do want to get two youngsters at approximately the same time, those pups could be different breeds and do not have to be from the same litter. Some people choose to get one puppy, get a handle on house training and other skills, and then get another puppy a few months later.

Can you breed two dogs with the same dad?

What's more, in most cases, their inbreeding was not even as closely related as sharing one parent the same, but from intermarriage between cousins. Please do not breed two dogs with the same parent. In fact, cousins should not even be bred together. Genetic variety promotes the health an well being of a breed.

Are pet rats the same as wild rats?

The Difference Between Pet Rats & Wild Rats. Nearly all domesticated rats are descendants of wild Norwegian rats (Rattus norvegicus). Wild and domesticated rats have the same body structures and eating habits, but they also have differences in lifestyle and behavior.

Can puppies in the same litter be different ages?

However it can occur in dogs because females produce a number of ova (eggs) at the same time, which is why they have litters of pups rather than one at a time. So if Mommy is a party girl, her pups might look quite different from each other because, although they came from the same litter, they had different Daddies.

Can kittens in the same litter be different ages?

Female cats, also called “queens,” usually give birth to litters of 3 to 5 kittens, but as many as 19 have been born at once. And while it's true that every kitten on this earth is cute in its own way, even those from the same litter can look completely different.

Can puppies be born in the same sac?

Dogs give birth to multiple puppies at a time, so technically every puppy in a litter is a twin. Identical, or monozygotic twins, come from the same egg, and therefore share a placenta and, often, an amniotic sac. According to scientists, this is the reason identical twins are probably rare in the animal kingdom.

Can male rats live alone?

Rats are social animals, gaining much enjoyment and stimulation from each other's company. They live in large family groups in the wild, so in captivity they live a more natural life if kept in pairs or more. They are not like the Syrian hamster, which is a naturally solitary animal, and hence is kept alone as a pet.

Can I keep two male cockatiels together?

Put cockatiels together in the same cage only if they get along. Typically, putting cockatiels of the same sex together in a cage together works well if they have gotten along during initial meetings. If you put male and female cockatiels together they may get along, but you will likely end up with baby cockatiels.

Can two male puppies get along?

Two male dogs can get along famously. If you have any difficulty, it shouldn't be until they are adolescents around 6 mos. or so. However, if they are raised together, there may be no problem at all.

Can two male cats get along?

The sex of the cats warrants consideration. In our experience, males are most likely to get along with other males (assuming they are neutered). Females are more likely to get along with a male rather than another female. Ultimately, the cats' personalities are most important.

Can you bond two unneutered male rabbits?

Two unneutered male rabbits put together will tend to fight, and two unspayed female rabbits can often fight just as viciously. An unneutered male and a spayed female can live together, but the male rabbit may become obsessive about marking territory, and may annoy the female rabbit by continually mounting her.

Can you keep two male rabbits together?

You can keep same sex rabbits together whether it's males or females. However, choosing to have both a female and a male living together makes it that much easier for them to form strong bonds with each other. Neutered and spayed rabbits tend to be far less aggressive and they are not so territorial either.

Do dogs like being in a cage?

Many people refuse to crate or kennel-train their dogs because they feel the confinement is cruel. However, a crate or kennel can give dogs a sense of security. Dogs have a natural instinct to be in a den. Many dogs take to a crate very easily.

Should puppies be kept in cages?

Crate training should be limited to specific times, like when you are sleeping. Dogs are social creatures and staying in a cage all day is harmful to their health. Once dogs move outside of their puppy (destroying) stage they should be able to volunteerly go in and out of their crate.

Can two male rabbits get along?

A pair of male rabbits may work together well, but the People's Dispensary for Sick Animals organization notes that male and female pairings may be more successful as long as both of the animals are neutered and spayed. Unfixed male rabbits may get very aggressive with each other -- constantly fighting for dominance.

Can the same signs be compatible?

Dating someone with your same zodiac sign can be interesting, since your partner might mirror both your best and your worst traits right back at you. Certain signs are more compatible with each other, like Cancer.

Can two male dogs get along?

In the case of two males, the dominant dog will become more dominant than he would have been on his own, and the submissive dog may become much more so. Two female dogs thrust together often cannot establish a stable pack order. And believe it or not, females are more likely to fight to the death than males are.

Can two male cats live together?

Neutering. Unfixed male cats are driven by their hormones, and as a result can get very territorial and competitive with others. Allowing two unneutered male cats to live together is often a recipe for disaster, especially when an unfixed female in heat is nearby!

Can you have two male parakeets together?

Female parakeets are dominant in their social interactions, so base your selection of a second budgie on gender. If you own a male and its cage is small, your best option is to select another male. Male budgies get along well together; they serenade one another, and usually interact harmoniously.

Will two dogs use the same pee pad?

Dogs do not like to pee and poop in the same place. In other words, your dog won't typically pee and poop on the same pad. You will need to place multiple pads on the floor if they have to eliminate more than once. If a pad has been used your dog is less likely to use it again.

Do two female kittens get the same litter?

There are many benefits in getting two kittens from the same litter: Related cats get along together better. There is no guarantee, of course, that your cats will be friendly with each other just because they are related, but it can offer a huge head start in their relationship.

Should I get two dogs from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Should I buy two puppies from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

How do you train two puppies at the same time?

Train them individually: When training two puppies, the dogs should attend training classes separately. Alternatively, if you're training at home, work with one dog while the other is with a human family member in a separate room.

Should you get two dogs from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Should you adopt two puppies from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Should I get two puppies from the same litter?

Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Do male rats spray?

No.A rat will not spray like a cat or other animals that spray. Males do scent mark,but it is not actually spraying.They just leave a few droplets on surfaces or even their owners.I have 3 males and they mark me.I have had several females in the past and some would mark,but it is more of a male thing.

What is the best way to introduce two male dogs?

So, without further ado, here is the best way to introduce your dog to another dog, in ten easy steps: Make sure both dogs are on a leash. Take the dogs on a walk "together" - single file. Praise your dog, no matter what they do. Keep it moving. Slowly let them sniff each other as they are walking.

Will two male dogs fight?

The male dogs could fight over their toys, their CANIDAE dog food, or their human's affection. Anything could set it off, and the child could be nearby. When two dogs of the same sex live in a household together, they are required to decide which one will be the top dog and which one will be the bottom dog.

Will two male rabbits fight?

A pair of male rabbits may work together well, but the People's Dispensary for Sick Animals organization notes that male and female pairings may be more successful as long as both of the animals are neutered and spayed. Unfixed male rabbits may get very aggressive with each other -- constantly fighting for dominance.

Will two male hedgehogs fight?

Male Cohabitation. It is best not to house male hedgehogs together, because they may start fighting at the onset of sexual maturity. Hedgehog fights can be quite loud, or their quarreling could go unnoticed until one is injured. Some males may perform courtship routines and mount another male.

Are male rats cuddly?

Unless you're planning to breed rats, you definitely have to keep just one gender in a cage. Other than that, male rats are really cool. They're cuddly, relaxed, and kind of lazy. They're bigger than females, which just adds to their cuddle factor, and surprisingly affectionate.

Is dating the same as being in a relationship?

The main difference between dating and being in a relationship is that people in a relationship are connected by a mutual commitment to each other. You and the person you're with have agreed, either officially or unofficially, that you're seeing each other exclusively and are in a partnership together.

How do you stop two male dogs from marking in the house?

Stop Your Dog's Territorial Marking Inside Spay or Neuter your dog. Vet check to rule out sickness. 3. Make sure he's getting enough potty breaks. If he is marking in just one spot repeatedly: Soak the area with pet urine enzyme cleaner and let it fully dry. If he is marking in multiple spots inside: Get a bandana and put some of his urine on it.

Can there be two alphas in a pack?

A wolf pack has a definite social structure and rules of conduct. The pack leaders are the alpha male and female. These two animals are dominant over all the other wolves in the pack. The alpha male and female are the only wolves that breed and produce pups in the pack, and they also get to eat first at kills.

Can a female dog get pregnant by two different males?

Yes. So can a female human, though a dog's biology makes it somewhat more likely. At root, the way you get offspring in a single pregnancy with multiple fathers is because sperm from different males is in the system and active at the time that ripened eggs are making their way down.

Can the male dog be around the puppies?

Mother dogs sometimes find the males to be nuisances when they're tending to their newborn babies. Mother dogs also might be wary that the males will be too rough with the delicate puppies. If you're looking after a litter of pups, consider letting the father see them when they hit the 4-week mark.

Do two male dachshunds get along?

There are two male dachshunds in the household and two female dachshunds. Their ages range from 8 years to 1 year. All dogs are neutered and spayed. All the dachshunds interact well together and with humans.

Do male pet rats smell?

Generally, male rats are more a culprit for smells than females. Male rat's urine is much more potent and they tend to scent mark around cages meaning the urine can be anywhere and on anything! However, female rats tend to use certain areas and their urine is not as strong smelling as males.

Can a female dog have puppies by two males?

A female dog can have as many different fathers for her puppies that bred with her. Dogs can release multiple eggs and they can be fertilized by whichever dog's semen is present. If more than one male bred her, that's how many fathers the puppies can have. When a dog ovulates the eggs are not totally mature.

Can a woman get pregnant by two guys at the same time?

It is possible for twins to have different fathers in a phenomenon called heteropaternal superfecundation, which occurs when two of a woman's eggs are fertilized by sperm from two different men. Ordinarily, a woman becomes pregnant because one of her eggs has been fertilized by sperm.

Should a dog be kept in a cage?

Crate training should be limited to specific times, like when you are sleeping. Dogs are social creatures and staying in a cage all day is harmful to their health. Once dogs move outside of their puppy (destroying) stage they should be able to volunteerly go in and out of their crate.

Can a female dog have puppies from two different males?

So, I looked up the breeding ecology of dogs and sure enough, it is common for a litter of pups to share one mama but have different daddies. Female dogs release multiple eggs during ovulation and are thus capable of conceiving every time they mate during this period.

Will two male dogs get along?

Generally speaking, opposite sex dogs do better together. In the case of two males, the dominant dog will become more dominant than he would have been on his own, and the submissive dog may become much more so. Two female dogs thrust together often cannot establish a stable pack order.

Will two male boxers get along?

There is also - apparently - tales that two females cannot live together due to both wanting to exert dominance and some go so far as to advise that two female Boxers may fight to the death. Two females or two males will generally not be able to live under the same roof.

Will two male Chihuahuas get along?

Unlike many other breeds of dogs, owning two Chihuahuas does not create twice the work. The Chihuahuas will play together, sleep together, eat together – and of course go everywhere together. They will become inseparable. The only problem that you may experience is the loss of one of the dogs.

Can a cat get pregnant by two different males?

A cat in heat can have multiple eggs, and they can be released over several days of her cycle. If Tabby has chosen more than one Tom during her heat cycle, it's possible she'll be carrying kittens with multiple fathers. Pregnant or not, she will continue to mate until the heat cycle is over.

Will two male puppies get along?

Male puppies are more likely to get along than females. Two puppies may be twice as much fun as one, but having two can also double your troubles. Confrontation is a staple of canine socialization, so it can take a while to train them out of aggressive behavior.

Can you keep two male zebra finches together?

It it best to keep at least two zebra finches together. Pairs can be same sex or opposite sex, though females tend to get along better together than males. If a same sex pair is kept, a nest or nests should NEVER be placed in the cage or fighting may occur between the birds.

Do two male dogs get along?

They are not any more aggressive than the females and as far as two males living together in peace, I can say that we have owned four males schnauzers two at a time and have never experienced any problems. Sometimes even unneutered males can get along, but if you are getting a rescue it will undoubtable be neutered.

Will two male kittens get along?

Two males who are raised together will be attached at the hip. If you currently have an adult male, you should be able to bring in a male kitten without any trouble. Keep in mind, however, that there are some cats — male and female — who will not tolerate any others cats and need to be “only children!”

How do you socialize two male dogs?

So, without further ado, here is the best way to introduce your dog to another dog, in ten easy steps: Make sure both dogs are on a leash. Take the dogs on a walk "together" - single file. Praise your dog, no matter what they do. Keep it moving. Slowly let them sniff each other as they are walking.

Can pet rats survive in the wild?

Be under no illusion: Pet rats should never, ever be released into the wild. They have been bred in captivity since the 18th century, and many of their wild traits have been bred out of them. Assuming a pet rat could survive as a wild rat is like thinking a chihuahua could survive with a pack of wolves.

How can I get my dog and cat to be in the same house?

Allow both animals to be in the same room at the same time, but keep the dog securely leashed. Continue with this type of introduction until the dog is calm and ignores the cat, and the cat is calm, eating and using the litter box normally.

Is sleeping the same as being unconscious?

Being asleep is not the same as being unconscious. A sleeping person will respond to loud noises or gentle shaking. An unconscious person will not.

Can the male dog be around newborn puppies?

Mother dogs sometimes find the males to be nuisances when they're tending to their newborn babies. Mother dogs also might be wary that the males will be too rough with the delicate puppies. If you're looking after a litter of pups, consider letting the father see them when they hit the 4-week mark.

Can two dogs be left alone?

These dogs are fine when left alone so long as they have another dog there with them. Other dogs could care less about having another dog there with them or not, they are upset because their people are gone. Dogs can feed off each other and be heavily influenced by each others behavior.

Can you be two Chinese zodiac signs?

The Chinese Zodiac has 12 Signs — Rat first. There are 12 Chinese zodiac signs. In order, they are: Rat, Ox, Tiger, Rabbit, Dragon, Snake, Horse, Goat, Monkey, Rooster, Dog, and Pig.

Can two puppies be left alone?

Before You Leave Your Dogs Alone Together. Your dogs must be fully comfortable around each other while humans are present before being left alone together without supervision. Keep your puppy in their designated puppy zone while you're gone to make sure your older dog gets a break.

Why should birds not be caged?

Birds are meant to fly and be with others of their own kind in a natural environment. Confinement causes birds to have temper tantrums and mood swings. Birds older than 8 to 10 weeks of age don't sell well at pet shops so many are kept for breeding and condemned to small cages for the rest of their lives.

Can male dogs be incontinent?

It is less commonly reported in neutered males and intact dogs of both sexes. In most dogs, incontinence occurs within 3 to 4 years of neutering,1 although it may not become a major problem until later in life when it can be complicated by diseases that cause polyuria and polydipsia.

Can wild rats be pets?

It may have seen dogs or cats before, but many rats who live with these animals view them as safe due to being used to their presence. A pet rat will sit there and wait to be eaten by whichever predator turns up. While even domesticated rats retain some fight or flight instinct, they are no match against a wild animal.

How long do male rats live?

Domesticated rats have a longer lifespan than that of wild rats. Because domesticated rats are protected from predators and have ready access to food, water, shelter, and medical care, their average lifespan is around two to three years, in contrast to wild R. norvegicus which average a lifespan of less than one year.

How big should a dog cage be?

In general you want a small kennel, 18 inches long or so, for toy dogs such as a Maltese. Kennels that are about 2 1/2 feet long are suitable for dogs up to about 40 pounds, including cocker spaniels, while basset hounds and other dogs up to about 70 pounds do best in a kennel that is around 3 feet long.

Do cats like to be caged?

We all know that cats are very active and playful when they are still young. Even in their adult stage they are still active. It is not common to cage cats and you only see caged cats usually on pet shelters or pet shops. Caging cats or is not really advisable, but sometimes they need to be caged for some reasons.

What temperature should a hedgehog's cage be?

What temperature do Pygmy hedgehogs need? Hedgehogs need their cage to be kept between 23 – 25 degrees Celsius. The temperature should never drop below 18 degrees Celsius or rise above 28 degrees Celsius. If a Pygmy hedgehog gets too cold, she may attempt to hibernate.

Will male rats eat their babies?

Mouse dads don't have the same aggressive response to babies that fatherless males do. Male mice are not natural-born fathers. Males that have never mated respond with aggression to chemical signals from newborn mice pups, whereas those that have fathered pups are more nurturing, a new study finds.

Do female rats live longer than males?

“A female rat in a laboratory will live longer than males.

Do male rats have mammary glands?

In this study, mammary glands from both male and female rats had altered mammary gland morphology. 3.—Xenobiotic-induced hormonal effects and morphologic mammary gland alterations in adult non-pregnant females or male rats.

Do male rats smell less when neutered?

Generally, male rats are more a culprit for smells than females. Male rat's urine is much more potent and they tend to scent mark around cages meaning the urine can be anywhere and on anything! However, female rats tend to use certain areas and their urine is not as strong smelling as males.

Do male rats eat their babies?

Mouse dads don't have the same aggressive response to babies that fatherless males do. Male mice are not natural-born fathers. Males that have never mated respond with aggression to chemical signals from newborn mice pups, whereas those that have fathered pups are more nurturing, a new study finds.

Is it a bad idea to get two puppies from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Is it bad to get two dogs from the same litter?

If you are considering taking home two puppies from the same litter because of your breeder's influence, be cautious. This, however, can happen by raising one puppy to adulthood and adopting another after you have the first dog trained. This solution is far less difficult than raising sibling puppies at once.

How do you leash train two dogs at the same time?

Walking two dogs can be accomplished in more than one way. You can continue using separate leashes, which allows the dogs more freedom to sniff and move about. Or you can train them on a coupler, which is two short leads that snap to each collar, with a ring in the middle that attaches the two leads to one leash.

Is it bad to adopt two puppies from the same litter?

The most common reason given for not adopting two pups from the same litter is that they will “bond better” with each other than with you. I suspect this indeed does have to do with social bonding to some extent, but I have seen pups of a duo who clearly adored their humans. Adored them.

Is it a good idea to get two puppies from the same litter?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Is it a bad idea to get two puppies at the same time?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Is it better to get two puppies at the same time?

Well, not usually. Most training professionals strongly recommend against adopting two pups at the same time. Just because you have two kids and they both want their own puppy doesn't mean you should get two pups. You stand the best chance of raising well-trained and -socialized puppies one at a time.

Can you use the same word twice in Scrabble?

Can You Use the Same Word Twice in a Single Game of Scrabble? A single word as many times as possible during a game of Scrabble. As long as every word the tiles touch is a dictionary word, the word is allowed.

Can you take Allegra and Zyrtec in the same day?

If your allergy is particularly bad then yes you can take them on the same day, as there are no known interactions. This is a therapeutic duplication and it is usually recommended to take only one antihistamine at any time, however if you have been prescribed to take both together then it is appropriate.

Can skin tags grow back in the same spot?

There is no recovery time needed, and skin tag treatment usually leaves no trace of the tag — there shouldn't be any scarring. However, although that skin tag doesn't grow back, new skin tags may form.

Is taking two birth control pills the same as Plan B?

While these are not sold specifically as emergency contraceptive pills, they have been proven safe and effective for preventing pregnancy in the few days after sex. These daily birth control pills contain two hormones, progestin and estrogen, and are taken in two doses.

Is it better to have two dogs of the same gender?

Generally speaking, opposite sex dogs do better together. In the case of two males, the dominant dog will become more dominant than he would have been on his own, and the submissive dog may become much more so. And believe it or not, females are more likely to fight to the death than males are.