Dogs can make about 100 different facial expressions.
18
Female kangaroos have three vaginas.
2
Hummingbirds can't walk.
32
The reindeer is the only mammal that can see UV light.
17
A species of earthworm in Australia grows up to 10 feet in length.
10
Elephants, lions, and camels roamed Alaska 12,000 years ago.
32
