[Lovetodream88]

Originally Posted by matese

A female puppy comes into her first heat usually 6 to 8 months old, as an adult a female comes into heat every 6 months. A female can become pregnant at any age, 6 months until the end of her life. A puppy should be spayed before her first heat usually 6 months old to prevent mammary tumors and Pyometra which can cause death, I lost 2 girls to Pyometra 6 months apart. It is important to get this girl spayed if she is not. The longer she goes without being spayed the greater the risk for mammary tumors and Pyometra.

Sometimes smaller dogs will not go into heat until a year old.