When you shave a guinea pig it looks like a little hippo.
19
The difference between antlers and horns is that antlers are shed each year and are made of bone while horns are kept for life and are made of living tissue and bone with a sheath that is very similar to human finger nails.
10
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Alligators can live up to 100 years.
337
Lurch, a Watusi bull, had the largest horns in the world.
32