My vet does a great job with male neutering. Both males I have had fixed there came home and just started to run and play with the other cats. Ming raced up his kitty tree to the top the second I let him out of the cat carrier. It is really a minor surgery, so my vet says, and most of the time they are in very little, if any, pain. Buddy came home and just started playing and racing around. It neve hurt them at all.