Cats that are spayed, both male and female, are much nicer animals. Furthermore, the earlier in the cat's life that the operation is done, the less likely it is to affect the cat's purrsonality. My Pixel was desexed at about 10 weeks and there has been no detriment to her purrsonality that I know of (we didn't know her before she was desexed) but she is still a lovely little kitty!