When cats are happy, they may squeeze their eyes shut.
10
Cats sleep for 70% of their lives.
8
Cats are one of the only animals to domesticate themselves and approach humans on their own terms.
20
Only 3% of bird species have penises.
0
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
Dogs sometimes fake being sick to get attention.
26