Um a bear...lion...tiger...oh my
So this was a for real question right?
Hippos. Adorable in a Disney film, but in real life? Not so much. Hippos kill between 500 and 3,000 people every year in Africa, making them the deadliest land mammal in the world.
Slow Loris. These little guys have a venom that can kill a human. Unfortunately, that hasn't saved them from being exploited and killed by them.
Just don't pour water on them.
... or feed them after midnight.
(which always made me wonder at what point, after midnight, it became okay to feed them.)