Because dogs go into heat generally twice a year, a dog will go into heat approximately 4 to 6 months after giving birth, according to WebMD. This can vary greatly with different breeds.
Larger dog breeds go into heat much less often, with a typical span of 12 to 18 months between normal cycles. Smaller dog breeds are much more regular, with 3 to 4 months between each cycle. A mother dog who is nursing puppies will not go into heat, and if she is to be spayed, the surgery should wait until after the pups are weaned and before she goes into heat again.Learn More
Yes, it is possible for a dog to go into heat if she has been spayed. This is only true if the dog had her tubes tied versus having a whole ovariohysterectomy, which removes all of the female reproductive organs.Full Answer >
A dog that is not spayed first enters heat when she is between 6 months old and 24 months old. If she is spayed, she normally experiences heat twice a year. Smaller dog breeds typically experience heat earlier than larger breeds. Heat lasts about 18 days.Full Answer >
Unspayed female dogs tend to experience estrus, or go into heat, twice a year. Some breeds go into heat more often than others, and spayed dogs do not go into heat.Full Answer >
On average, a female dog that hasn't been neutered or spayed goes into heat twice a year. The duration of the heat cycle is between 12 and 21 days, although this varies between breeds and individual dogs and can last up to four weeks.Full Answer >