Will heartworms hurt my dog?
Heartworm infection can affect many different organs of the dog—heart, lungs, kidneys, and liver, for example—so symptoms may be varied.
A veterinarian may suspect that a dog has been infected if an active animal tires easily or shows shortness of breath or coughing.
Early in the disease, dogs are often asymptomatic.
Generally, an adult average sized dog at 12 months of age, weighs about twice their weight at 4 months of age, or 2.5x the weight at 14 weeks.
Adult giant breeds grow more slowly, take longer to mature, and don't reach adult growth until they're at least 16-18 months old.
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