When cats are happy, they may squeeze their eyes shut.
10
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
If a vampire bat goes 2 days without drinking blood, they can die. However, well fed female bats will puke up blood and share it with other bats that they like in exchange for grooming.
13
Allegedly, Chrysippus, the Greek philosopher, died of laughter after getting his donkey drunk and watching it try to eat figs.
47
A dairy cow can produce more milk when listening to music.
446
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132