The most yolks ever found in one chicken egg was nine.
163
Black bears are not always black. They can be brown, cinnamon, yellow, and sometimes white.
32
Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
Elephants are the only animals that can't jump.
1
The lifespan of mammals is about 1 and a half billion heartbeats.
127
There is a species of clam that can grow up to four feet long and weigh up to 500 pounds.
89
If NASA sent birds into space they would soon die; they need gravity to swallow.
146