Female puppies become adult at the age of 4-6 months and get their first heat cycle. Large breeds can take more time to become adult like 18-24 months while small breeds can be adult as early as 4 months. But breeding is not allowed by the professional after first heat cycle because dogs are not physically mature at this age and some breeding fitness tests are possible at 2 years of age. So, if you want to breed your dog, then wait for 2 years of his/her age.
Heat cycle in dogs can last for 3-4 weeks and can be repeated after 6 months and in some breeds once in a year.
Heat cycle in dogs can last for 3-4 weeks and can be repeated after 6 months and in some breeds once in a year.