Look under the tail
Male cats usually have the anus and genital opening farther apart
Female cats usually have the anus and genital opening closer together
Male cats usually have a round genital opening
Female cats usually have a vertical slit-shaped genital opening
Male cats may have visible testicles if they are not neutered
Female cats do not have visible testicles
Male cats often have a larger gap between the openings
Female cats often have a smaller gap between the openings
Check the kitten’s age, since very young kittens can be harder to sex
If unsure, ask a veterinarian or experienced breeder