Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
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
Some lizards, in which the tail is a major storage organ for accumulating reserves, will return to a dropped tail after the threat has passed, and will eat it to recover part of the sacrificed supplies.
13
Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
17
Early American humans hunted car-size armadillos and used their shells for houses.
12