How long do dogs stay in heat for?

Heat usually lasts between 2-4 weeks. Early in the cycle, a female dog may not be receptive to male dogs, although some are receptive through the entire cycle. It can be shorter or longer and you'll know the cycle is over when all her vulva returns to its normal size and there's no more bleeding or discharge. read more

The time during which male dogs are attracted to a female dog is variable, approximately 18 days. However, females are receptive to males for only about half of this time. read more

A female dog will generally stay in heat for about three weeks or around 21 days. However, this heat cycle will vary from one dog to the next. It depends on the breed, the age and the dog herself. A female dog will go into heat twice a year. It is normal for a female dog to skip a heat cycle, but rest assured she, will not have an extra one. read more