Sheep, goats, octopuses, and toads have rectangular pupils.
7
One reason that kittens sleep so much is because a growth hormone is released only during sleep.
212
In 2005, in Africa, it was reported that three lions rescued a 12-year-old girl from kidnappers and guarded her for half a day until help came.
46
Travis was a chimpanzee who socialized with humans since birth. He could log onto a computer to look at pictures, watch TV using a remote control, brush his teeth, feed hay to his owner's horses, water plants, and learned the schedule of passing ice cream trucks.
11
A giraffe's kick is so powerful that it can decapitate a lion.
216
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
Dire wolves actually existed, living up to 10,000 years ago before going extinct.
10
Squirrels forget where they hide about half of their nuts.
698