How old is a female dog before she stops coming into heat?

Answer by  keiki (1376)

Often a dog will go into heat for her whole life. Even elderly dogs can get pregnant, and most dogs will continue their heat cycles into old age. It can depend on the breed, but some breeds can go into heat until they're 15 years old, while some may stop when they're 10.

Answer by  usagkthompson (273)

Well, this depends on the dog, but most dogs never stop going into heat and have the ability to give birth all the way up to old age. Of course they stop going into heat when they are spayed and some have been known to quit at an earlier age.

Answer by  killerjonam (143)

The time varies. Usually a puppy goes into heat around 6months-1 year. At times, it could last from a couple weeks to a couple years. Owners should always ensure that their dogs who are in heat are away from other un-neatered male dogs as it could cause an inappropriate scene.