The reindeer is the only mammal that can see UV light.
17
There was a bear called Wojtek who was adopted by Polish soldiers during WW2. It carried ammunition, wrestled with soldiers, and drank beer.
40
Only 3% of bird species have penises.
0
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268
Baks the blind boxer has a seeing eye goose named Buttons; a four-year-old goose who leads the pup around everywhere either by hanging onto him with her neck, or by honking to tell him which way to go.
16
Cats lose almost as much fluid in the saliva while grooming themselves as they do through urination!
205
The Hercules beetle, despite weighing only 100 grams, can lift 8 kilograms, making it one of the proportionally strongest animals in the world.
8