Cats sleep for 70% of their lives.
8
Using a remote-controlled camera, biologists caught dolphins getting high by sucking on puffer fish. They were even caught passing the puffer fish around.
23
Dolphins can rapidly heal from extreme injuries, such as shark bites, and regenerate their original body shape.
19
In 1918, a homing pigeon saved over 190 American soldiers by delivering a message to nearby support despite having been shot through the breast, blinded in one eye, covered in blood, and with a leg hanging on by just a tendon.
22
During World War 1, starving wolves amassed in such great numbers that Germans and Russians had a temporary cease fire to fight off the wolf attacks.
45
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
Bats sleep 18-20 hours per day.
5
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12