Albatrosses can sleep while flying, using a technique called dynamic soaring.
Bison can run up to 35 mph and jump up to 6 feet vertically.
Andean condors can soar on air currents for hours without flapping their wings.
A camel's hump doesn't store water, but fat that can be converted to energy and water.
Arctic foxes can hear lemmings burrowing under 4-5 inches of snow.
Baby llamas, called crias, can stand and walk within an hour of birth.
Bald eagles can see fish underwater from several hundred feet in the air.
Barn owls can locate prey by sound alone in complete darkness.
Some bats can eat up to 1,000 insects in a single hour.
Black bears can smell food from over 2 miles away.
Blue jays can mimic the calls of hawks, often to warn other jays of danger or to trick other birds.
Dolphins sleep with one half of their brain at a time, keeping one eye open to watch for predators.
A baby rabbit can leave its nest at just three weeks old.
Calves can recognize their mothers by their moos.
Canada geese can travel 1,500 miles in just 24 hours during migration.
Male canaries are known for their singing, which they use to attract mates and defend territory.
Chicks can communicate with each other and their mother while still inside their eggs.
Chimpanzees can learn human sign language and pass it on to their offspring.
Otters have the thickest fur of any animal, with up to one million hairs per square inch.
Ravens have been observed using 'gestures' to communicate, such as pointing with their beaks to indicate an object to another raven.
Cows have best friends and can become stressed when separated from them.
Crows can recognize individual human faces and hold grudges against people who have wronged them.
Cats can make over 100 different vocal sounds, while dogs can only make about 10.
Dogs can understand up to 250 words and gestures, about the same as a 2-year-old child.
Ducklings can swim and dive within hours of hatching.
Elephants are the only mammals that can't jump.
An elk's bugle can be heard for miles and is one of the most distinctive sounds in nature.
Emperor penguins can dive up to 1,800 feet deep and hold their breath for up to 22 minutes.
Male cuckoos can mimic the call of a sparrowhawk to scare other birds away from their nests.
Fawns are born scent-free to avoid attracting predators.
Foals can run within hours of being born.
Giant pandas have an extra 'thumb' that helps them grip bamboo.
A giraffe's spots are like human fingerprints; no two have exactly the same pattern.
Goats have accents that change based on their social groups, just like humans.
Gorillas can catch human colds and other respiratory diseases.
Gray seals can sleep underwater and surface to breathe without waking up.
Grizzly bears can remember the location of food sources for many years.
Guinea pigs purr like cats when they're content.
Hares are born with fur and open eyes, unlike rabbits which are born hairless and blind.
Horses can sleep both standing up and lying down.
Humpback whales create the loudest sound of any living creature, audible up to 500 miles away.
Hyena 'laughter' is actually a form of communication that can mean different things, from excitement to frustration.
Icelandic horses have two additional gaits compared to other horse breeds: the tölt and the flying pace.
Killer whales, or orcas, are actually the largest member of the dolphin family.
Kittens sleep for about 20 hours a day, twice as much as adult cats.
Koalas' fingerprints are so similar to humans' that they have on occasion been confused at a crime scene.
Lambs can recognize their mothers by their bleats alone.
A lion's roar can be heard from up to 5 miles away.
Lion cubs are born with blue eyes that change to amber or brown as they grow older.
A moose's antlers can grow up to 6 feet wide and weigh up to 40 pounds.
Mice can produce ultrasonic vocalizations and 'sing' to attract mates.
Pigs are one of the smartest domestic animals, with intelligence comparable to that of a 3-year-old human child.
Newborn piglets can recognize their mother's voice within 48 hours of birth.
Polar bears have black skin under their white fur to better absorb heat from the sun.
Polar bear cubs often stay with their mothers for up to 2-3 years, learning crucial survival skills.
Puppies are born deaf and blind, with their eyes and ears sealed shut until about two weeks of age.
Rabbits can see behind them without turning their heads.
Raccoons can remember the solution to tasks for up to three years.
Red foxes can hear a mouse squeak from about 150 feet away.
Kangaroos can't walk backwards easily due to their strong tails and large feet.
Red squirrels can swim and have been known to cross rivers to find new territories.
Reindeer eyes change color from golden in summer to blue in winter to adapt to changing light conditions.
A group of rhinoceros is called a 'crash'.
Ring-tailed lemurs spend about 33% of their day sunbathing in a yoga-like sitting position.
Sea lions can slow their heart rates to stay underwater for up to 40 minutes.
Sheep have rectangular pupils that give them a field of vision of around 300 degrees.
A skunk's spray can be accurate up to 10 feet and can be smelled up to a mile away.
Tasmanian devils can eat up to 40% of their body weight in a single day.
Tigers have striped skin, not just striped fur.
Walruses can slow their heartbeats to withstand the frigid Arctic waters.
Water buffalo can live up to 40 years in the wild.
A deer's antlers can grow up to half an inch per day during the growing season.
Wolves can exert up to 1,500 pounds of pressure per square inch with their bite.
No two zebras have exactly the same pattern of stripes.