When Washoe, the first chimp to use sign language, was told that her caretaker's baby had died, she signed "CRY."
20
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
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
The largest earthworm on record was found in South Africa and measured 22 feet.
151
Cats recognise the voice of their owner, but never evolved to care.
22
Honeypot ants are a unique insect that use their own bodies as living storage pots of honey.
4
A scorpion can hold its breath for up to 6 days.
19