Wolverine
Wolverines are medium sized, carnivorous mammals that are native to the northern regions of North America, Europe, and Asia. They are known for their strength, ferocity, and tenacity, and have a reputation as being one of the most formidable predators in their range.This creature will hunt anything and everything it happens to come across, and that includes human beings. While wolverines are not generally considered to be dangerous to humans, they are solitary animals and can be very territorial. They’ve been videotaped fighting wolves, and even though they’ve never killed a human, it’s best to stay far away from these animals (via Best Life Online).