Blue whale arteries are large enough for humans to swim through and their hearts are the size of cars.
12
A puppy is born blind, deaf, and toothless.
16
A scorpion can hold its breath for up to 6 days.
19
Sloths take two weeks to digest their food.
243
A dairy cow can produce more milk when listening to music.
446
A domestic cat can sprint at about 31 miles per hour.
274
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
An alligator can go through 2,000 to 3,000 teeth in a lifetime.
268