6. Hyena (1,100 psi)
Hyenas suffer from a pop-cultural reputation as cowardly scavengers. (Most have us have seen “The Lion King,” right?) It’s mostly undeserved. Although hyenas are indeed scavengers — but hey, so are dogs — they do hunt and kill their own food the majority of the time. With their aggression, and a biting force that rates as one of the most powerful of all mammals on Earth, hyenas have even been known to chase off lions in order to claim prey for themselves. Take that, Mufasa. And whether you’re talking about fresh kills or scavenged caracasses, hynenas are ravenous and leave little behind. When feeding, they routinely shatter and consume bone using their mega-powerful jaws. Shuddering yet? If you plan on camping in hyena territory, beware. They may attack unprovoked. Just this summer, hyenas attacked a sleeping Kenyan family in the middle of the night, killing two children and injuring six other people.