Crocodiles open their jaws to cool themselves and release heat through their mouths because they don’t have sweat glands. 

Octopuses have three hearts.

The panda is one of the most adored and rarest of animals.

The kangaroo gets from place to place by hopping or bouncing. 

Some frogs can jump over 20 times their own body length.

The elephant’s incredible trunk is actually an extended nose and upper lip.

Dolphins use a blowhole on top of their heads to breathe.

Bats can tell the distance of various objects by how quickly the sound waves bounce back to them. 

Grizzly bears hibernate during the winter and their sleeping allows them to conserve energy.

The pelican has the largest bill of all birds.

If an echo doesn’t bounce back during echolocation, bats can safely fly forward. 

The eagle is one of the largest raptors in the world.

The ladybug is a beetle.

At an average height of around 16- 18 feet, the giraffe is the tallest land animal in the world.

Bats are the only mammals capable of flying. 

The name hippopotamus means “river horse”. 

Male deer grow new antlers every year.

Bamboo makes up nearly the entire diet of the giant panda.

Elephants are the only mammals that can’t jump. 

Lizards are the largest group of reptiles with about 5,000 species.

Cheetahs are the only big cats that don’t have retractable claws. 

Even though leopards are the smallest of the big cat family, they are pound for pound the strongest of the big cats. 

When discovered, an octopus will release purple-black ink to obscure its attacker’s view, giving it time to swim away. 

There are over 260 known species of monkeys, all of whom display their own distinct look.

Each bee hive has a specific smell which originates from pheromones, chemical signals produced by the queen bee.

Bees live in a highly organized society composed of worker bees, drones and a queen.

The polar bear has specialized teeth, fur and foot structure which allows it to survive and flourish in very cold climate. 

Ladybugs can attach themselves to the ground via a sticky substance on their feet which also facilitates movement across objects. 

About every 20 minutes, a dolphin must rise to the surface of water to breathe air which means they can never fully sleep. 

Spiders do not have an antennae while insects do. 

Spiders are arachnids, not insects.

Hippopotamuses spend most of their time in water because they don’t have sweat glands. 

The polar bear is the largest of the bear species and the largest land dwelling carnivore.

The horns of the goat are made out of the substance keratin. 

Although it is believed that the term peacock applies to both male and female, it is actually a name that refers to males while females are called peahens. 

Flamingos can only eat when its head is upside down.

Snails can sleep for 3 years without eating.

The koala bear is not a bear at all and is not related to any bear species.

Turtles are able to hold their breath for hours at a time.

Penguins are flightless birds but their flippers allow them to be great swimmers. 

Dolphins are able to learn lots of tricks because they have a large brain.

Penguins huddle together to keep warm in cold temperatures. 

Butterflies often have brightly colored wings with unique patterns made up of tiny scales.

The name rhinoceros means “nose horn”.

When chameleons get excited, they may display more colors, stripes or spots. 

Female sharks are larger than male sharks. 

Frogs don't drink but they absorb water through their skin.

Dolphins can hold their breath for up to 7 minutes. 

The lion is the only true social cat living in groups called prides. 

The process of surfacing and breathing is automatic, and even a hippopotamus sleeping underwater will rise and breath without waking. 

Oysters don’t move once they are adults. 

Spiders have 8 legs while insects have 6.

Butterflies have taste receptors on their feet.

Most spiders make silk which they use to create spider webs and capture prey.

Abandoned spider webs are called cobwebs.

Dragonflies have serrated teeth. 

The elephant’s trunk is able to sense the size, shape and temperature of an object. 

Leopards spend most of their lives high in the trees.

The ladybug is a symbol of good luck. 

Renowned for its majesty and nicknamed “the king of the jungle,” the lion possesses both beauty and strength.

Male deer have larger antlers than the female deer.

Underneath the bill, pelicans have a throat pouch that can hold 3 gallons of water which is mainly used for feeding but it can also be used as a cooling “device”. 

In the case of danger, the ladybug secrets a harmful substance from the knee joints that keeps predators on the safe distance.

The mythological winged stallion, Pegasus was thought to be a bringer of thunder and lightning.

Hummingbirds are known as “the flying jewels” because they are able to change the color of their feathers when they fly. 

There are over 150 different varieties of the rabbit coat color. 

Penguins spend their entire lives on the ice or in the water.

The kangaroo’s hind legs are designed to move together except when they are swimming.

Sea turtles have special glands which help them to remove salt from the water they drink.

The word “koala” is a term for “no drink” because the koala gets most of its hydration from the leaves it eats. 

When confronted with a potential threat, the octopus camouflages itself and blends in with its surroundings.

The color and body print of the boa constructor depends on the habitat. 

The snail quickly retreats into its shell in the case of danger. 

The elephant’s brain is the largest of all land mammals. 

The color change of chameleons isn't to blend in with the environment.

There are over 30,000 known species of fish.

Some lizards change colors like the chameleon.

The chameleon’s ability to change color helps them to identify each other but also communicate with each other and can be used as camouflage.

Snail-like animals that do not have a shell are usually called slugs. 

Cheetahs are the fastest land animal on earth. 

The horn of a rhinoceros is made from compacted hair rather than bone or another substance.

The ostrich is the largest and heaviest bird in the world.

Skin on the back of crocodiles contain bony structures which make their skin bulletproof. 

Even when a snake has its eyes closed, it can still see through its eyelids. 

Hummingbirds are the tiniest of the bird species.

Flamingos hold their breath while feeding. 

Kangaroos can hop up to 30 feet in one jump.

Due to their unusual body structure, kangaroos never move backwards and are always moving forward. 

Fish have gills that extract oxygen from the water around them.

It is believed that koi fish symbolize wealth, prosperity, love, successful career and good fortune.

Snakes have flexible jaws which allow them to eat prey bigger than their head.

Alligators have a U-shaped jaw while crocodiles have a V-shaped jaw.

Polar bears spend the majority of their lives on water, rarely touching the true solid earth.

Ostriches have the fastest maximum running speed out of all birds.

Female lions hunt together, only occasionally helped by male members, but when the hunt is over, the adult males, generally 30 to 40 percent larger, eat first.

Only worker bees and the queen bee have stingers which are used for self- defense but since the queen bee never leaves the hive, she does not sting. 

Rabbits perform allo grooming where two individuals will simultaneously groom each other. 

The color of the lynx’s fur depends on the season. 

The mature male of the cattle species is called a bull.

The snail’s body consists of a strong, muscular foot and coiled shell.

Tigers are the largest of the big cat family. 

Seahorses prefer to swim in pairs with their tails linked together.

The color change of chameleons is the result of the mood change, temperature, light and moisture in their environment.

The elephant is the largest animal on land. 

Octopuses are considered the most intelligent of all invertebrates.

The bee is the only insect able to produce food that will be eaten by humans.

Raccoons often place food in water before they start to eat it.

Leopards can go one month without water.

The jaguar has the strongest bite of all the big cats, with a force of 2,000 pounds.

Black bears are not usually black. 

Raccoons can identify objects before touching them due to the vibrissae (specialized hairs or whiskers) located above their sharp, non-retractable claws.

A leopard can walk up to 47 miles.

Pigs have a range of different oinks, grunts, and squeals which have distinct meanings.

The hippopotamus’s teeth are only used for defense and fighting.

Snakes can't bite food but have to swallow it whole.

Snakes smell with their tongue and can locate their prey with it as well.

There are around 10,000 different species of birds in the world.

Pelicans are heavy birds, but thanks to air sacs in their bones- buoyancy is not a problem.

When the rabbit senses danger, it will stamp its feet to alert the other rabbits.

Donkeys are related to horses and zebras.

Although monkeys and apes are primates, the most obvious difference between them is that apes do not have tails. 

Although the bill of a toucan is large, which may deter predators with its sheer size, it is useless as a weapon as it isn’t solid.

Pheromones which are chemical signals produced by the queen bee, facilitate recognition of bees when they are outside the hive.

Giraffes are ruminants which means that they have more than one stomach, they have four stomachs, which assist in digesting food. 

Foxes have whiskers around their faces as well as on their legs which they use to help them find their way. 

The amazing mimic octopuses are capable of changing their body shape to mimic other animals. 

Sharks do not have a single bone in their bodies but instead they have a skeleton made up of cartilage. 

The snail uses its shell as shelter.

Within their intricate underground homes, mice have specific areas for storing food and for shelter.

The ostrich’s significant weight prohibits the bird from flying. 

Each dolphin has a signature whistle used to identify itself.

The leopard’s tail is 90 percent of its body length. 

During warmer months, grizzly bears eat a massive amount of food in order to live off body fat during the winter, when food is scarce.

Ostriches have the largest eyes in the whole animal kingdom. 

Most snail species have a ribbon-like tongue called a radula that contains thousands of microscopic teeth which work like a file, ripping food up into tiny pieces. 

Parrots are thought to be one of the most intelligent bird species.

Most birds have hollow bones which help them fly.

A single elephant tooth can weigh as much as 9 pounds.

Zebras identify each other by smell and vocalization, not by their stripes.

Bees can be easily recognized even from a long distance via a buzzing sound that is consequence of 11,400 wing strokes in a minute. 

Owls are territorial animals which hoot to announce their territory.

A lion’s roar can be heard for 5 to 6 miles. 

The fox belongs to the canine family.

The eye of an ostrich is bigger than its brain.

Hummingbirds are named after the humming sound which is produced by their wings during flight.

Seahorses avoid predators by mimicking the color of underwater plants.

Crocodiles don’t cry because they feel sorry for their prey, but because they swallow too much air which gets in touch with their glands that produce tears and forces tears to flow.

Hummingbirds can fly backwards and are the only birds which are able to do this. 

Cougars are the only big cats which can't roar but purr instead.

All vital organs of the octopus are located in their head. 

Mice are incredibly clean, tidy and organized.

Oysters filter water in and out of their protective shells in order to protect their vulnerable bodies.

The skill of echolocation by bats is when they make noises and wait for the sound waves to bounce back off objects producing an echo.

The big hump on the grizzlies back is a mass of muscle, giving the grizzly bear the strongest front limbs of any animal in the world. 

Raccoons are smaller relatives of bears. 

The dense bodies of hippopotamuses make it impossible for them to swim, even though they spend most of their time in the water.

Bats can see in the dark using a special skill called echolocation.

Sharks never stop moving even when they are sleeping or resting.

It takes 5 years for an oyster to produce a medium sized pearl.

Penguins take turns moving towards inside of the pack, where it is warmer, thereby sustaining the entire group. 

The ink of an octopus contains a substance that dulls a predator’s sense of smell, making the fleeing octopus harder to track. 

Many turtle species can hide their heads inside their shells when attacked by predators except for sea turtles.

The owl is a very successful hunter because it can fly silently.

Penguins can dive deeper than any other bird and can stay under water for more than 20 minutes. 

Horses have bigger eyes than any other mammal that lives on land.

Worker bees are the most numerous members of the hive as one hive can have up to 40,000 worker bees. 

Koalas are nocturnal and spend four to six hours a night quietly munching on leaves.

Hippopotamuses only eat grass.

When rabbits “binky”, this is an expression of joy.

Crocodiles have the strongest bite of any animal in the world.

Dolphins have sensitive skin which flakes off and gets replaced every few hours.