Ouch! According to wikipedia: The female will utter a loud yowl as the male pulls out of her. This is because a male cat's penis has a band of about 120–150 backwards-pointing penile spines, which are about one millimeter long;[153] upon withdrawal of the penis, the spines rake the walls of the female's vagina, which is a trigger for ovulation. I'm so glad I'm not a cat
cats are worst than rabbits, i had a brother and sister from the same litter that weren't fixed before the first two litters in less than a year.