Rhinoceros
A rhino horn is made from compacted hair.
Whale
Some whales sleep vertically (not side to side). Also... you can tell the age of a whale by the wax in their ears.
Cat
Cats use their whiskers to check whether they will fit into a space.
Reindeer
Reindeer grow new antlers every year.
Dog to human ratio...
There are over 470 million dogs in the world. That is 1 dog for every 16 people
Mosquito
Both male and female mosquitos feed on plant and fruit nectar, but ONLY female mosquitos bite because they need more nutrients to lay all their eggs.
Earthworm
There are no male or female earthworms... they have both reproductive systems and parts.
Grizzly Bear
A grizzley bear's bite is so strong that it can crush a bowling ball.
Dragonfly
Dragonflies can see in ALL directions at the same time.
Camel
Camels can drink 50 gallons of water IN ONE MINUTE!
Emperor Penguin
An emperor penguin can stay underwater for 27 minutes.
Bat
Bats are the only mammals that can fly. They also have thumbs.
Nine-Banded Armadillos
Nine-Banded Armadillos always give birth to identical QUADRUPLETS.
Regal Horned Lizard
The Regal Horned Lizard repels its attackers by squirting blood out of their eyes.
Giant Anteaters
Giant Anteaters can eat over 30,000 insects a day (not just ants).
Giraffe
Giraffe has seven bones in its neck... the same as a human, but much larger.
Snake
Snakes can see with their eyes closed.
Gorilla
Gorillas burp when they are happy. Their noseprints are also as unique as a human fingerprint.
Sloth
Sloths are so slow that in their native climate, algae actually grows on their fur.
Chameleon
A chameleon's tongue is as long as their body.
Cheetah
We all know cheetahs are fast. But did you know cheetahs only need to drink every three to four days (and its hot where they live)?
Ostrich
An ostrich eye is bigger than its brain.
Polar Bears
Polar bears are not white. Their fur is actually transparent and their skin is black.
Shark
Some sharks give birth to live babies. Others lay eggs. Shark eggs are the biggest eggs in the world (for body size). These are called a "mermaid's purse".
Tiger
A tiger's roar can be heard nearly two miles away.
Hummingbird
Some hummingbirds weigh less than a penny and are the only birds that can fly backwards. Their wings beat up to 200 times PER SECOND!
Flamingo
Flamingo crop milk is BRIGHT RED and produced by both parents giving the chick its pink color until they can eat on their own.
Starfish
Starfish have no brain and no blood. They aren't even fish.
Rat
Rats laugh when being tickled.