The oldest recorded elephant lived for 82 years.
213
Cats and dogs can hear ultrasound.
350
Condoms were originally made of animal intestines or linen.
347
When you shave a guinea pig it looks like a little hippo.
19
Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
Tigers can see 6 times better at night than humans.
305
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6