21. Lion

The king of the savanna is up to 500 pounds of predatory cat with teeth like daggers and eviscerating claws. To put that into perspective, they compete with crocodiles for prey — and that’s not all. They also have the occasional propensity for killing humans, and have deliberately targeted them in the past. Indeed, statistics published in Nature from Tanzania found that lions attacked 563 people over 15 years from 1990.