Hippos have the ability to lock their jaws at nearly 180 degree angles 😍

Hippos have the ability to lock their jaws at nearly 180 degree angles 😍 This feature, which makes a hippo look like it's yawning, is particularly important when hippos end up in conflict with other animals. The wide opening angle means that hippos can produce a bite force of 1,800 PSI—enough to break bones and snap wooden planks in two.