Pigs can be trained to play video games with their snouts.
Human drugs often end up washing from sewers into rivers, which can alter animals' natural behaviours.
In 2011, scientists discovered that the rats lace their fur with a deadly poison.
Escobar's pet hippos were left behind when his private zoo closed, and they've flourished in the decades after his death.
Rabbit Hash, Kentucky, has a peculiar tradition of electing canine candidates.
The grizzly bears' strategy could help prevent muscle atrophy in humans as well.
The Swiss say it's cruel and lobsters can sense pain.
Octopuses can sometimes suffer from autophagy, or self-cannibalism.
The nymphs, called spittlebugs, make the foam, although it isn't actually spittle.
Cuba's extinct giant owl, Ornimegalonyx, was the largest owl that ever lived.
It took 48 different pigs to play the role of babe.
Coming in many shapes, colors, and sizes, strange mouth markings might aid in chick survival.