Moose
You wouldn’t think of a moose as being one of the most dangerous animals in the world, but they are. They’re extremely skittish and unpredictable. Their sheer size alone, plus their antlers, poses enough of a threat to humans. When startled, a moose will charge a human and kill them.

This is especially true if you’re invading their territory or they’re trying to protect their young. Additionally, there’s a large population of moose in the wild, especially in Alaska, Maine, and Colorado. They’re known for being more aggressive in March and April, because of the lack of food supply in the wintertime, as well as in September and October during mating season. They usually don’t attack a person unless they’re provoked. If you happen to spot an aggressive moose, you must hide behind a large object like a rock or a tree, or run (How Stuff Works).