I got my 10 week old kitten yesterday and he was desexed 3 days before that. That seems too young. Wondering what effects this could have on his hormones, personality and development?
I don't think you need to worry. The ASPCA says:
It is generally considered safe for kittens as young as eight weeks old to be spayed or neutered. In animal shelters, surgery is often performed at this time so that kittens can be sterilized prior to adoption.