The elephant brain weighs about 6,000g.
274
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
There's a rare breed of pig that looks like a sheep.
14
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Jellyfish as a species are actually older than dinosaurs and sharks.
383
Denmark has twice as many pigs as there are people.
66