Female kangaroos have three vaginas.
2
A puppy is born blind, deaf, and toothless.
16
Early American humans hunted car-size armadillos and used their shells for houses.
12
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The most expensive cow in the world was sold in 2009 for $1.2 million.
-3