Here's why:
* Ferrets are mammals: Like all mammals, they reproduce through sexual intercourse.
* Fertilization: A female ferret needs sperm from a male ferret to fertilize her eggs and create a pregnancy.
It's important to note that female ferrets can go into heat (estrus) even if they haven't been around a male ferret. This can be dangerous as it can lead to a condition called "jill's disease," which can be fatal.
If you have a female ferret, it's crucial to have her spayed to prevent unwanted pregnancy and health issues.