#evil animals

(I'll go with #5)

No. 5 is the lemur who lives at Disney World. This creature is a member of the lesser Bushbaby genus of lemur, which is about two to three times bigger than a regular lemur:

It also shares the name "Disney World" with the Disney resort town in Florida where a huge bunch of other Disney-associated creatures live – a kind of metamovie involving Disney-owned theme parks.

Why is it a lemur? Well, it isn't a lemur, it's a primate called the lesser bushbaby, but most people just call it "the lemur". Because it looks like a lemur.

The least evil animal on the planet is probably a horse named Lucifer, which allegedly killed a trainer who was trying to work with him, a man named Michael Tinsley.

Horses are an "evil" genus – not only are they "evil horses", they're also sometimes trained to deliberately paralyze people with their eyes.