Can two different species produce fertile offspring?

05 Neanderthals: Against Admixture - nDNA

Best Answer

Species and the Ability to Reproduce.

A species is a group of individual organisms that interbreed and produce fertile, viable offspring.

Interbreeding in Dogs: Dogs of different breeds still have the ability to reproduce.

Why Can't Mules Have Babies?

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Related Questions

Why can't different species produce fertile offspring?

Why can some interbreeding species produce fertile offspring, while others—like horses and donkeys—cannot? Horses have 64 chromosomes, while donkeys have 62, and when they mate, their chromosomes don't pair up properly, inhibiting meiosis in their offspring. As a result, mules are sterile.

Can wolves and dogs produce fertile offspring?

Wolves (canis lupus), coyotes (canis latrans), and domestic dogs (canis familiaris) are closely-related species. All three can interbreed and produce viable, fertile offspring — wolfdogs, coywolves, and coydogs. Through DNA analysis, scientists have established that the wolf is the ancestor of the dog.

Can two fertilized eggs implant at different times?

In rare cases, two eggs can be fertilized at different times during two or more acts of sexual intercourse, resulting in fraternal twins with two different fathers, called bipaternization. Monozygotic, or identical twins, occur when one fertilized egg splits into two separate embryos.

Why Can't Humans Breed with Animals?

Are Different dogs different species?

But among dogs, which are well known for their hybrid (or mongrel) varieties, different breeds can mate and have viable offspring, so they are all found under the umbrella of a single species, Canis familiaris. Dogs are highly unusual in their variation, from the Chihuahua to the Great Dane.

Can different species of birds live together?

Canaries, budgerigars, parrots, finches and cockatiels: these colourful birds have different characteristics and needs, but some can live together under the same roof. Unlike cages, aviaries are roomy enough that birds can fly inside them. Every bird needs its own space, so be sure not to put too many in your aviary.

Can two sperm fertilize one egg?

With identical twins, one egg is fertilized by one sperm, and the embryo splits at some later stage to become two. Occasionally, two sperm are known to fertilize a single egg; this 'double fertilization' is thought to happen in about 1% of human conceptions.

Why different species Cannot reproduce?

In this definition, members of the same species must have the potential to interbreed. However, that doesn't mean they have to be part of the same interbreeding group in real life. In some case, organisms of different species can mate and produce healthy offspring, but the offspring are infertile, can't reproduce.

What is the term for a group of organisms that can reproduce and have fertile offspring?

A species is a group of similar organisms that can breed with one another to produce fertile offspring. For example, humans are one species and dogs are another species. Individuals of the same species can reproduce to make more individuals of the same species.

What is A Species? Can Humans Interbreed With Other Animals?

Can puppies have two different dads?

It means that yes, the litter of puppies will have more than one father. If Sophie mates with multiple dogs, then yes, she can easily get pregnant and the litter of puppies can have different fathers. But to each their own. This means that a puppy cannot have two fathers, but each puppy can have a different father.

Can two different breeds of dogs mate?

But among dogs, which are well known for their hybrid (or mongrel) varieties, different breeds can mate and have viable offspring, so they are all found under the umbrella of a single species, Canis familiaris. Dogs are highly unusual in their variation, from the Chihuahua to the Great Dane.

Can two different dog breeds live together?

Having multiple dogs in your household can be challenging as you have to choose breeds that can work and live together. If you choose canines that are not compatible, they may end up fighting. You can also pair low and high energy breeds or older canines and puppies.

Are dogs and cats different species?

Based on appearances, they look as different as the cat and the dog did, and yet they both belong to the same species. Dogs actually are part of a sub-species called Canis lupus familiaris that are derived from the grey wolf Canis lupus.

What prevents different species from mating?

According to the biological species concept, organisms belong to the same species if they can interbreed to produce viable, fertile offspring. Species are separated from one another by prezygotic and postzygotic barriers, which prevent mating or the production of viable, fertile offspring.

Why Can’t Different Species Mate With Each Other?

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 you feed a dog two different foods?

Most dogs are happy eating the same food regularly. If you wish to add some canned food or a little homemade stew to their food to make it tastier, that's fine, but dogs usually don't like a lot of change. Changes in your dog's food often lead to an upset gastrointestinal tract with diarrhea or vomiting.

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.

Can a dog be pregnant by two different dogs?

If two male dogs mate with the female on the same day, it's a straight swimming race between the sperm as to which reaches the ovum first and fertilizes it. If different males mate with the female on different days, she can fall pregnant by both of them.

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.

What is the difference between breed and species?

Breeds are different varieties of domestic animals of the same species. For example, German Shepherd and Rottweiler are different breeds, but the same species - dogs. A species is usually defined as a group of animals that can interbreed and produce fertile offspring.

Can I feed my dog two different foods?

A healthy dog or cat can eat a different food at each meal without issue as long asthey are high-quality foods. Remember, every meal dosn't need to be perfectly balanced as long as the diet is balanced over the course of a week. Whenever feeding any diet, it's important to remember to include supplements.

Can a dog mate with two different dogs?

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.

Can you get two puppies from different litters?

Raising two puppies from different litters is a challenge, but not quite as huge of an undertaking as raising two puppies from the same litter. Two puppies from separate litters, however, will bond with you as well as each other. Tip #1 - Select one puppy of each sex if you haven't already chosen your dogs.

Can a baby have two different colored eyes?

There are several ways people can have two different colored eyes. People can be born with heterochromia, or it can result from disease or injury. It's pretty rare for people to inherit mismatched eyes from their parents.

Why do offspring from the same parents usually have a different set of traits?

In asexual reproduction all the genes in the offspring come from one parent. In sexual reproduction one full set of the genes come from each parent. Living things produce offspring of the same species, but in many cases offspring are not identical with each other or with their parents.

What causes a dog to have two different colored eyes?

Heterochromia iridis is a rare (and often strikingly gorgeous) condition in which animals, including humans, have two different colored eyes. It's particularly noticeable in dogs and cats. So why does it occur? The iris of the eye is colored by melanin (the same stuff that gives pigmentation to our skin.)

Are there two different types of Labrador Retrievers?

As The Labrador Retriever Club states, “There is only one breed of dog known as the Labrador Retriever, described by the standard of the breed.” These two types are mere subtypes of Labs. The distinction and difference between English Labradors and American Labradors exist because of decades of specialized breeding.

Can species cross breed?

A hybrid animal is one with parentage of two separate species, differentiating it from crossbred animals, which have parentage of the same species. Hybrids are usually, but not always, sterile. One of the most ancient types of hybrid animal is the mule, a cross between a female horse and a male donkey.

How do you feed two dogs different food?

Set Feeding Times. Feed both dogs at the same time of day, but still cater to the alpha dog of the two (or more), by putting its food down first. As long as both dogs eat the same food, and will finish their meal all at once, there shouldn't be any problems.

What can produce co2?

Carbon dioxide is produced during the processes of decay of organic materials and the fermentation of sugars in bread, beer and wine making. It is produced by combustion of wood and other organic materials and fossil fuels such as coal, peat, petroleum and natural gas.

Can Pheromones be artificially produced?

Most sex pheromones are produced by the females; only a small percentage of sex attractants are produced by males. Aggregation pheromones have been found in members of the Coleoptera, Diptera, Hemiptera, Dictyoptera, and Orthoptera.

Which animals can produce ultrasound?

Two animals that produces ultrasound are Bats and dolphins.

Can invasive species be good?

Invasive plant species can sometimes be a force of good in the ecosystems they infiltrate, according to new research. However, Carlo said, most ecosystems have been so vastly changed by human intervention that returning them to their original state is difficult, since many native plant species have become rare.

Can all dog species interbreed?

In the wild, most species will not normally interbreed with any other species. But this isn't necessarily because they're genetically incompatible. So the fact that most dog breeds can easily interbreed isn't reason enough to consider them all the same species, although that's a large part of it.

Can fertilizer hurt dogs?

Symptoms of Fertilizers Poisoning in Dogs. A case of mild exposure to fertilizer can result in burns on the pads of the feet (if your pet walked through or rolled in your fertilizer application) or irritation to the mouth or eyes. Serious complications can become evident if your pet has ingested a large amount.

Can a woman produce sperm?

Female sperm. Female sperm can refer to either: A sperm which contains an X chromosome, produced in the usual way by a male, referring to the occurrence of such a sperm fertilizing an egg and giving birth to a female. A hypothetical sperm which artificially contains genetic material from a female.

What can you name a dog with two different colored eyes?

Claire Beaudreault. Heterochromia iridis is a rare (and often strikingly gorgeous) condition in which animals, including humans, have two different colored eyes. It's particularly noticeable in dogs and cats.

Can dogs poop fertilizer?

Dog poop in particular is not fertilizer like cow manure. Contrary to popular opinion not all poop is created equal. Dog's have a high protein based diet that creates a very acidic excrement or waste product. Cow manure is in fact good for vegetation because it in fact started out that way.

Can fertilizer spikes kill trees?

Don't be tempted to place the spikes close to the tree trunk. Too much fertilizer can weaken and even kill your trees. Keep the spikes at the drip line. Per tree, spikes are a little more expensive than granular or liquid fertilizer.

Can a spayed dog produce milk?

A. Spaying a lactating (producing milk) female is generally not recommended. Even if the puppies or kittens are weaned, the mother may still be producing a small amount of milk.

Can fertilizer hurt dogs paws?

However, harmful chemicals are sometimes added to fertilizer to fight weeds and insects. Exposure to these chemicals and improperly applied “safe” chemicals can irritate, inflame and burn your dog's paws. Toxic chemicals can also find their way into your dog if he walks on them and then licks his feet.

What species can dogs breed with?

But among dogs, which are well known for their hybrid (or mongrel) varieties, different breeds can mate and have viable offspring, so they are all found under the umbrella of a single species, Canis familiaris. Dogs are highly unusual in their variation, from the Chihuahua to the Great Dane.

Can you fertilize deer poop?

While deer droppings are a rich source of nitrogen, they're not the best choice of fertilizer for a vegetable garden.

Can dogs get pregnant by other species?

However, their offspring are infertile, which means they cannot reproduce. All dogs of all breeds can breed with each other. The most important thing to know is that a dog can only be pregnant if she has successfully mated with a male dog (or wolf or coyote) while she was in heat.

How can invasive species be controlled?

The best way to fight invasive species is to prevent them from occurring in the first place. You can help stop the introduction and spread of invasive species. Help protect native plants and animals by following these six easy guidelines: Verify that the plants you are buying for your yard or garden are not invasive.

Who produced Red Dog?

Nelson Woss Julie Ryan

How is speech produced?

Speech production. Speech production is the process by which thoughts are translated into speech. Normally speech is created with pulmonary pressure provided by the lungs that generates sound by phonation through the glottis in the larynx that then is modified by the vocal tract into different vowels and consonants.

What animals produce meat?

The most common sources of meat are domesticated animal species such as cattle, pigs and poultry and to a lesser extent buffaloes, sheep and goats. In some regions other animal species such as camels, yaks, horses, ostriches and game animals are also eaten as meat.

Do dogs produce oxytocin?

The researchers suspected that the hormone oxytocin was involved. It is well-known that oxytocin plays a role in social relationships between individuals, in both humans and animals. Before the behavioural test, the researchers increased the levels of oxytocin in the dogs' blood by spraying the hormone into their nose.

Can fertilizer be used to melt ice?

A safer alternative for melting ice might be to use garden fertilizer. This is not quite as effective as salt, but run-off water mixed with fertilizer will help plants and lawns as long as you don't use too much. Excessive applications of fertilizer will harm plants in the growing season.

How can I make myself more fertile?

Here are 17 natural ways to boost fertility and get pregnant faster. Eat Foods That Are Rich in Antioxidants. Eat a Bigger Breakfast. Avoid Trans Fats. Cut Down on Carbs. Eat Less Refined Carbs. Eat More Fiber. Swap Protein Sources. Choose High-Fat Diary.

How can I boost my fertility?

Here are 17 natural ways to boost fertility and get pregnant faster. Eat Foods That Are Rich in Antioxidants. Eat a Bigger Breakfast. Avoid Trans Fats. Cut Down on Carbs. Eat Less Refined Carbs. Eat More Fiber. Swap Protein Sources. Choose High-Fat Diary.

Are species names italicized?

Italicize family, genus, species, and variety or subspecies. Begin family and genus with a capital letter. Kingdom, phylum, class, order, and suborder begin with a capital letter but are not italicized. If a generic plural for an organism exists (see Dorland's), it is neither capitalized nor italicized.

How can I know my fertile days?

When you know your average menstrual cycle length, you can work out when you ovulate. Ovulation happens about 14 days before your period starts. If your average menstrual cycle is 28 days, you ovulate around day 14, and your most fertile days are days 12, 13 and 14.

Can a dog with one testicle produce puppies?

When one testicle does descend into the scrotum the pet will be fertile. When two missing testicle are under the skin near the scrotum, the pet may be fertile. But it is a very bad idea to breed dogs and cats that are cryptorchid because their descendants will carry the same defective genes.

Can two Labradoodles mate?

Generally Labradoodles are largish dogs. The offspring of such a mating is known as an F1 cross and may have the added benefit of heterosis (or 'hybrid vigor'). If two Labradoodles are mated together, this is known as F2. It is claimed that these dogs will not shed their coats but this is not guaranteed.

Can two goldendoodles breed?

Goldendoodles - F2. A second generation Goldendoodle (F2) is the result of a Goldendoodle bred to a Goldendoodle - and there are very few of these actually bred as the second generation hybrid is genetically the most varied generation possible. First generation hybrids are all exactly 50% of each parent breed.

Can you use human poop as fertilizer?

The use of unprocessed human feces as fertilizer is a risky practice as it may contain disease-causing pathogens. Nevertheless, in some developing nations it is still widespread. These risks are reduced by proper fecal sludge management, e.g. via composting. The safe reduction of human excreta into compost is possible.

Can dogs get sick from lawn fertilizer?

Consumption of significant amounts of fertilizer naturally can lead to more serious toxicity symptoms in dogs. Chemicals such as nitrogen and iron often contribute to stronger risks of toxicity. If your pet ingested a considerable amount of a fertilizer that is meal-based, he might develop a stomach concretion.

Can alcohol kill a fertilized egg?

"(Alcohol) kills and alters cells in a way that these other things can't." The damage can begin immediately after conception, when heavy drinking can kill the just-fertilized egg. Six to nine days after conception, the developing embryo anchors to the wall of the mother's uterus.

Can you fertilize your lawn too much?

In fact you can damage your grass, especially if you use a fast-release fertilizer, which can even burn your lawn. Hold off on the fertilizer until the fall—and you may not have to do it again in the spring. The time to apply fertilizer is when the grass is growing more roots than blades.

Can you walk on grass after fertilizing?

Spring is here, lawns are coming back to life and it's time to feed that growing grass. Allow 24-48 hours, depending on the label, after applying most synthetic fertilizers before any pets, kids or pregnant women walk on the lawn. Water the lawn and allow to completely dry before using the lawn after fertilizing.

How can I help my momma dog produce milk?

You can add supplements to fresh water or other liquids to stimulate the production of milk of your dog. During nursing, what the mother dog takes in is also imparted to her puppies. 3. If your dog isn't drinking water, you can give her a lukewarm chicken broth.

Can a dog produce milk if not pregnant?

False pregnancy, or pseudopregnancy, is a term used to denote a common condition in a non-pregnant female dog that is showing symptoms of pregnancy, lactation, or nursing, without producing puppies. The affected female dog shows these symptoms about a month or two after her estrus (heat) is over.

What can I give my dog to produce milk?

Milk thistle is one natural supplement known to help nursing mothers with their milk-making. Other dogs benefit from taking zinc while providing for their pups. In small doses, apricot can also increase milk production. Whatever you decide, it's always best to run it by your vet before you begin supplementing.

What does it mean when your eyes are two different colors?

Someone with central heterochromia has different colors within the same eye. Complete heterochromia is when they have two different colored eyes. Heterochromia of the eye is caused by variations in the concentration and distribution of melanin, the pigment that gives color to the skin, hair, and eyes.

Can dogs have two fathers?

It means that yes, the litter of puppies will have more than one father. If Sophie mates with multiple dogs, then yes, she can easily get pregnant and the litter of puppies can have different fathers. But to each their own. This means that a puppy cannot have two fathers, but each puppy can have a different father.

Can you breed two Cavapoos?

The name 'Cavapoo' is given to a cross between a Cavalier King Charles Spaniel and a Miniature Poodle (so is not a breed in the accepted sense). The offspring of such parents is known as an F1 cross and may have the benefit of heterosis (or 'hybrid vigor') If two Cavapoos are mated together, this is known as an F2.

Can you take two Zyrtec?

May be taken with or without food. Zyrtec is usually taken once a day. Zyrtec is not a substitute for epinephrine which is used for the treatment of severe allergies and anaphylaxis. Zyrtec is available as a tablet, chewable tablet, or a suspension for adults or children who have difficulty swallowing tablets.

What testicle produces more sperm?

Testosterone is the hormone that causes boys to develop deeper voices, bigger muscles, and body and facial hair, and it also stimulates the production of sperm. Alongside the testicles are the epididymis and the vas deferens, which make up the duct system of the male reproductive organs.

How is human voice produced?

Generally speaking, the mechanism for generating the human voice can be subdivided into three parts; the lungs, the vocal folds within the larynx (voice box), and the articulators. The vocal folds (vocal cords) then vibrate to use airflow from the lungs to create audible pulses that form the laryngeal sound source.

Can two iguanas live together?

Some people have been able to keep pairs or small groups of females or females and one male together successfully. Others have not been able to do so. In the wild, iguanas are solitary animals. They get together only during the breeding season, and then only for short amounts of time.

Can two people use furbo?

Yes you can! But to protect your privacy, Furbo can only be linked to one Email account and password. If there are multiple users, it is recommended to share a family group account and password. Please note that Furbo can only have two users connected at the same time.

Can human sperm fertilize a dog?

Dog sperm looks similar to human sperm, but unlike the human version, dog sperm isn't ready to fertilize an egg right away. If the coating remains intact, the sperm's DNA can't fertilize the egg.

Can animal sperm fertilize human egg?

Egg Fertilized Without Sperm. In a bizarre reproductive biology advance, researchers have fertilized mouse eggs with cells from another mouse's body--instead of sperm. The work is the first demonstration that embryos can develop from the combination of an intact egg and a nonreproductive cell.

Can you eat a fertilized chicken egg?

The answer is yes. It is perfectly okay to eat fertilized eggs. Also, as mentioned in the previous paragraphs, once the fertilized egg is stored inside the fridge, the embryo no longer undergoes any change or development. Rest assured that you can eat your fertilized chicken eggs just fine like the unfertilized ones.

Can you use human waste as fertilizer?

The use of unprocessed human feces as fertilizer is a risky practice as it may contain disease-causing pathogens. Nevertheless, in some developing nations it is still widespread. These risks are reduced by proper fecal sludge management, e.g. via composting. The safe reduction of human excreta into compost is possible.

Can I fertilize after mowing the lawn?

When fertilizing a lawn, it is best to apply fertilizer after the lawn has been mowed so it has a few days to absorb the fertilizer. Wait until late summer, fall or early spring to fertilize the lawn. Grass clippings release nitrogen into the grass, which is one of the three main components of commercial fertilizers.

Should plant species be capitalized?

Scientific names are binomial, having two parts, genus and species, in that order. Genus is always capitalized, species never is. Many plants do not have common names. When talking about them, people often use the scientific name, and soon the scientific name is turned into a common name.

Are tree species names capitalized?

The scientific names of species are italicized. The genus name is always capitalized and is written first; the specific epithet follows the genus name and is not capitalized. There is no exception to this.

Can a dog produce milk without being pregnant?

False pregnancy, or pseudopregnancy, is a term used to denote a common condition in a non-pregnant female dog that is showing symptoms of pregnancy, lactation, or nursing, without producing puppies. The affected female dog shows these symptoms about a month or two after her estrus (heat) is over.

Can I take two Zyrtec?

Zyrtec or the antihistamine portion has a potential to cause some drowsiness and dry mouth. Zyrtec-D should be taken with a full glass of water either with or without food. Zyrtec-D can be taken every 12 hours and no more than 2 tablets in 24 hours. For information on allergies visit Everyday Health at the link.

Can two cats get along?

Some cats just won't give peace a chance. There are several reasons that cats might not get along. While some cats overlap their territories a great deal, others prefer to keep a good distance from their neighbors. Two unrelated males or two unrelated females may have a particularly hard time sharing space.

Can any two dogs breed?

So the fact that most dog breeds can easily interbreed isn't reason enough to consider them all the same species, although that's a large part of it. It comes down to how you define "species." Many scientists use the rule of thumb that if two organisms can interbreed, they are of the same species.

Can two unvaccinated puppies play?

Limit your puppy or unvaccinated dog's exposure to other dogs until he's had his first two vaccinations, unless you are sure the other dogs are fully vaccinated.

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 breed two cockapoos?

The cockapoo is one of the most popular cross-breeds in the UK, which involves breeding a poodle and a cocker spaniel - hopefully, you'll end up with your dream cockapoo. These two dogs are such a high-demand cross-breed due to the behavioural traits both dogs possess, as well as their appearance.

Can any two dogs mate?

In the wild, most species will not normally interbreed with any other species. So the fact that most dog breeds can easily interbreed isn't reason enough to consider them all the same species, although that's a large part of it.

Can you have two dogs?

While it's not recommended to have two puppies at the same time, having two dogs—whether it's two older dogs, or an older dog and a puppy—at the same time comes with a boatload of benefits for you, your family, and the doggies themselves.

What can I give my dog to produce more milk?

Milk thistle is one natural supplement known to help nursing mothers with their milk-making. Other dogs benefit from taking zinc while providing for their pups. In small doses, apricot can also increase milk production.

Which animal can produce the sound of a human laughter?

Research has noted the similarity in forms of laughter among humans and apes (chimpanzees, bonobos, gorillas, orangutans) when tickled, suggesting that laughter derived from a common origin among primate species, and therefore evolved prior to the origin of humans.

How can I stimulate my breast to produce milk?

How Breast-Feeding Women Can Stimulate Milk Production Breastfeed as soon as possible after you give birth. Position your baby so he is correctly latched. Nurse frequently, or whenever your baby shows signs of hunger. Allow unrestricted time at the breast. Offer both breasts at each feeding. Rest as often as you can. Eat a nutritious diet. Stay hydrated.

How can we stop invasive species in the Great Lakes?

​Invasive species—like zebra mussels and round gobies—have forever damaged the Great Lakes. We're working to keep new ones out. Once invasive species are established in the Great Lakes, it is nearly impossible to remove them. Preventing them from ever entering is the best way to protect the Great Lakes.

Can a dog still produce sperm after being neutered?

NO! Neutering means taking the testicles are removed. The sperm is produced in the testis and when it matures, migrates to the epididymis where it is stored until ejaculation. If you male dog gets a female pregnant after being neutered, he was never neutered to begin with.

What can you give a mother dog to produce milk?

Milk thistle is one natural supplement known to help nursing mothers with their milk-making. Other dogs benefit from taking zinc while providing for their pups. In small doses, apricot can also increase milk production.

How can I help my cat produce milk?

Steps Feed a pregnant cat enough to increase its weight. Feed new mother cats larger portions. Let your cat have free access to food. Make sure that you provide food intended for lactating cats. Ensure that the cat gets enough protein. Let the cat nurse its kittens for 7-9 weeks. Use a milk replacement if necessary.

Can a dog that has never had puppies produce milk?

One would expect their female dog to produce milk after she has had puppies. But dogs may even produce milk—or what looks like milk—through their nipples when they are not pregnant and have not recently given birth.

Can a woman who is not pregnant produce breast milk?

Lactation is the process of producing breast milk. For women who are pregnant or recently gave birth, lactation is normal. But it's also possible for women who have never been pregnant — and even men — to lactate. This is called galactorrhea, and it can happen for a variety of reasons.

How can I produce milk when not pregnant?

Lactation is common after a woman has given birth, and it can sometimes occur during pregnancy too. However, it is possible for both women and men to produce a milky discharge from one or both nipples without being pregnant or breastfeeding. This form of lactation is called galactorrhea.

Can you breed any two dogs?

And the poster child for cross-species reproduction, the mule, can't have offspring of its own. So the fact that most dog breeds can easily interbreed isn't reason enough to consider them all the same species, although that's a large part of it. It comes down to how you define "species."

Can a dog wear two collars?

Some dogs may become experts at ducking out of their collars; broad-necked or small-headed dogs have a higher risk of escape. Most dogs do not seem to notice wearing a simple flat-buckle collar (WDJ recommends fitting collars with room for 2 fingers between), whether on-leash or off.