The seahorse is the only fish to have a neck.
12
Dogs have been man's pet for over 14,000 years.
224
The cat brain weighs about 30g.
167
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
Squirrels will sometimes adopt orphaned baby squirrels that they’re related to.
12
Cows can sleep standing up, but they can only dream lying down.
745
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45