When dragonflies mate, their tails form a love heart.
22
A shrimp's heart is in its head.
32
A killer whale's heart beats 30 times a minute under water, 60 times a minute on the surface.
30
The animal responsible for the most human deaths worldwide is the mosquito.
200
Polar bear fur is not white, it's clear.
74
There’s a bonobo named Kanzi who has learned to build a campfire and cook his own food.
8
The male praying mantis cannot copulate while its head is attached to its body. The female initiates sex by ripping the males head off.
85
The giant squid has the largest eyes in the world.
62