The giant Pacific octopus has nine brains, three hearts, and blue blood.

AMAZING ANIMAL FACTS

– Hummingbirds are the only birds that can fly backwards. They can also fly upside down and hover in mid-air. Hummingbirds' wings beat up to 200 times per second, which is why they can fly so fast and maneuver so well.

AMAZING ANIMAL FACTS

– Crocodiles cannot stick their tongue out. Their tongue is attached to the floor of their mouth, so they have to swallow their food whole.

AMAZING ANIMAL FACTS

– Starfish do not have a brain. They have a central nervous system that is spread out throughout their body. Starfish can also regenerate lost limbs.

AMAZING ANIMAL FACTS

– Slugs have four noses. Two of their noses are located at the tips of their tentacles and two are located on their heads. Slugs use their noses to smell food and predators.

AMAZING ANIMAL FACTS

– Only female mosquitoes bite. Male mosquitoes do not have the mouthparts necessary to bite and drink blood. Female mosquitoes need blood to produce eggs.

AMAZING ANIMAL FACTS

– Polar bears' skin is black. Their fur is translucent, which allows the black skin to show through. This helps polar bears stay warm in the Arctic cold.

AMAZING ANIMAL FACTS

– The only mammal that can fly is the bat. Bats have wings that are made of skin stretched over their elongated fingers. Bats use their wings to fly, hunt for food, and navigate in the dark.

AMAZING ANIMAL FACTS

– A newborn kangaroo is the size of a lima bean. It climbs into its mother's pouch and stays there for about six months until it is developed enough to venture out on its own.

AMAZING ANIMAL FACTS

– Dogs sweat through their foot pads to help keep them cool. They also keep cool by panting.

AMAZING ANIMAL FACTS

– A dog's sense of smell is 1000 times greater than a human's.

– Greyhounds are the world's fastest dogs. They can reach speeds of up to 45 mph.

AMAZING ANIMAL FACTS

– Blue whales make the loudest sound of any animal. The remarkable sound, which registers at 188 decibels, can be detected almost 500 miles away!

AMAZING ANIMAL FACTS