At what age does a female dog go into heat? When does a female dog first come into heat? Puberty or sexual maturity in the female dog usually occurs around nine or ten months of age. Smaller breeds tend to go into estrus or ‘heat’ earlier, even as early as four months of age in some females, while in large and giant breeds, it can take up to two years.
How long does a dog’s 1st heat last? 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.
What are the first signs of a dog going into heat?
- Swollen Vulva. Located just below the anus, your dog’s vulva will turn redder in color and increase in size — often 2 to 3 times its normal size.
- Behavior Quirks.
- Increased Licking of the Vaginal Area.
- Vaginal Bleeding.
What time of year do dogs go into heat? Female dogs cycle into heat on average every six months. But this can vary, especially in the beginning, so it’s a good idea to keep track. It can take some dogs 18-24 months to develop regular cycles. Small dogs will tend to go into heat more frequently, as much as three or four times a year.