* Females: Females have a small, round vulva located just behind the anus.
* Males: Males have a larger, more prominent penis, and two testicles that are usually visible in the scrotum.
However, it's important to note:
* Juvenile ferrets: It can be difficult to determine sex in very young ferrets, as their genitalia may not be fully developed. It's best to wait until they are at least 6-8 weeks old before trying to determine their sex.
* Ferrets in season: During their breeding season (called "jill season"), female ferrets' vulvas will become swollen and red, making it easier to identify them.
* Experienced breeder or veterinarian: If you're unsure, a veterinarian or experienced breeder can accurately determine the sex of your ferret.
Remember: It's best to leave the sexing of your ferret to a professional unless you are very experienced with ferrets.