How to determine the sex of a kitten at 8 weeks old?

To determine the sex of a kitten at 8 weeks old, you can gently lift its tail and look at the genital area. Male kittens will have a small distance between the anus and the genital opening, while female kittens will have a closer distance between the two. It is important to handle the kitten carefully and consult a veterinarian if you are unsure.