I believe my yorkie is 4.5 months old. I set a spaying surgery for her next week when she is 5 months old. The breeder gave me different dates on when she was born (not sure why). Is it bad to spay before 6 months old? I heard that puppies may grow "taller" if they are spayed before 6 months. I just wanted to know if anyone else has had a spaying done before there yorkie was 6 months of age and if you feel they are taller then her parents.