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 42-foot sperm whale has about 7 tons of oil in it.
209
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The elephant brain weighs about 6,000g.
274
Condoms were originally made of animal intestines or linen.
347
In Australia, there are spiders big enough to eat snakes.
20