Is it easy to litter box train ferrets?

Well, it depends on who you are, how busy you are, and the kind of ferret you want to keep. You can have a ferret that lives mostly in a cage, or a ferret that roams around your house/apartment and spends next to no time in a cage. However, a ferret that does live in its cage most of the time still needs to be played with and let out often, or else it could become overweight, lazy, or extremely jumpy. A ferret that lives outside its cage needs to live in an environment that is completely "ferret-proofed", or stripped of anything that could be harmful to the ferret; small, swallowable objects, escape routes, and places where it could fall or get stuck in. Also, ferrets need to be litter trained. This isn't usually particularly difficult, depending on the ferret. In addition, ferrets need to have their nails trimmed, ears cleaned, fur groomed, cage cleaned, and attention to be the best pet it can be. Overall, it sounds a lot more difficult to care for a ferret than it really is, but again, it depends on the personality of the ferret and how much time you have to spend with it.