» A jellyfish is 95% water.
» A blue whales heart only beats nine times per minute.
» A cat uses its whiskers to determine if a space is too small to squeeze through.
» A chameleon's tongue is twice the length of its body.
» A crocodiles tongue is attached to the roof of its mouth.
» A rhinoceros horn is made of compacted hair.
» Rodent's teeth never stop growing.
» A shark can detect one part of blood in 100 million parts of water.
» A shark can grow a new set of teeth in a week.
» A starfish can turn its stomach inside out.
» Some ribbon worms will eat themselves if they can't find any food.
» Slugs have 4 noses.
» Owls are one of the only birds that can see the color blue.
» The penguin is the only bird that can swim but can't fly.
» The cheetah is the only cat that can't retract its claws.
» A lion's roar can be heard from five miles away.
» Emus and kangaroos can't walk backwards.
» Cats have over 100 vocal sounds; dogs only have 10.
» A mole can dig a tunnel 300 feet (91 m) long in just one night.
» Insects outnumber humans 100,000,000 to one.
» Sharkskin has tiny tooth-like scales all over.
» Chameleons can move their eyes in two directions at the same time.
» Koalas never drink water. They get fluids from the eucalyptus leaves they eat.
» Lacking a collarbone, the deer mouse can flatten its body so much it can squeeze into an opening one quarter of an inch high.
» A cow gives nearly 200,000 glasses of milk in her lifetime.
» The orca is the largest member of the dolphin family, and is not really a whale. Due to its size, however, the orca is frequently included in discussions of whales.
» When sharks take a bite, their eyes roll back and their teeth jut out.
» Vegetarian mammals produce more methane than carnivorous mammals. In other words, they fart more.
» Flies jump backwards when they take off.
» More than 20,000,000 seahorses are harvested each year for folk medicinal purposes. The world seahorse population has dropped 70% in the past 10 years.
» The largest insects that ever lived on the earth were giant dragonflies with wingspans of over 3 feet (91 cm).
» Camels chew in a figure 8 pattern.
» The blue whale is the largest animal that ever lived, reaching 100 feet (30 m) in length and weighing 150 tons. The largest dinosaur, Argentinosaurus, was estimated to weigh 110 tons.
» Cats, camels, and giraffes are the only animals in the world that walk right foot, right foot, left foot, left foot, rather than right foot, left foot.
» Proportional to their size, cats have the largest eyes of all mammals.
» Sailfish can leap out of the water and into the air at a speed of 50 miles (81 km) per hour.
» The catfish has the most taste buds of all animals, having over 27,000 of them.
» A skunk's smell can be detected by a human a mile away.
» A lion in the wild usually makes no more than 20 kills a year.
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