An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Crows living in some urban areas drop nuts into traffic to let the passing cars crush them, then they wait for the red lights to stop the traffic so they can grab and eat it.
17
The cat brain weighs about 30g.
167
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
When you shave a guinea pig it looks like a little hippo.
19
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6