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
A dog's naked behind leaves absolutely no bacteria when pressed against carpet.
250
Sergeant Stubby was the only war dog to be promoted to sergeant through combat in WWI. He saved his regiment from surprise mustard gas attacks, found and comforted the wounded, and even once caught a German spy by the seat of his pants, holding him there until American Soldiers found him.
16
One in three dog owners say they have talked to their pets on the phone.
427
Two dogs were among the Titanic survivors.
262
An average cat has 1-8 kittens per litter and can have 2-3 litters per year. During her productive life, one female cat could have more than 100 kittens. A single pair of cats and their kittens can produce as many as 420,000 kittens in just 7 years.
10
There's a competition in Sweden called Kaninhoppning, or rabbit show jumping.
-12
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6