I would think 8 to 10 months is risking a pregnancy. Male cats can sire kittens as early as 5 months. Another book I read says sexual maturity is reached at 8 to 10 months. From what I have been reading it doesn't seem like any vet can make up their mind as to when sexual maturity actually happens.
I just know from experience with mine. Some of my girls are in heat now and they are 7 and 8 months.
I know my vet won't spay a male before 6 months because of the increased risk of developing kidney stones if done earlier. IME it has always been 6 months for spays and neutures. I don't think breeds make any difference as far as being able to reproduce. A cat is a cat is a cat???
Last edited by 14+kitties; February 4th, 2008 at 10:46 AM.