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

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

The name rhinoceros means “nose horn”.

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

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

Donkeys are related to horses and zebras.

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. 

Each dolphin has a signature whistle used to identify itself.

Hippopotamuses only eat grass.

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

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

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

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

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

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.

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

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

Male deer have larger antlers than the female deer.

There are over 30,000 known species of fish.

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

The fox belongs to the canine family.

The ladybug is a symbol of good luck. 

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

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

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

Penguins huddle together to keep warm in cold temperatures. 

Spiders are arachnids, not insects.

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

The eye of an ostrich is bigger than its brain.

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. 

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

A leopard can walk up to 47 miles.

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

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

Snails can sleep for 3 years without eating.

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. 

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

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

Octopuses are considered the most intelligent of all invertebrates.

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

Mice are incredibly clean, tidy and organized.

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

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

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

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

Black bears are not usually black. 

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

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

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

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

Ostriches have the largest eyes in the whole animal kingdom. 

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

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

Spiders have 8 legs while insects have 6.

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

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

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. 

Kangaroos can hop up to 30 feet in one jump.

The snail uses its shell as shelter.

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

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

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

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

Leopards can go one month without water.

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.

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

Dolphins can hold their breath for up to 7 minutes. 

Owls are territorial animals which hoot to announce their territory.

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”. 

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

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

Female sharks are larger than male sharks. 

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

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

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

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

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

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

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.

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

Male deer grow new antlers every year.

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

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. 

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

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

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

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

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

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. 

The pelican has the largest bill of all birds.

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

The ladybug is a beetle.

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

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

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.

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

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

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

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

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

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

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

Dragonflies have serrated teeth. 

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

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

Abandoned spider webs are called cobwebs.

Leopards spend most of their lives high in the trees.

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

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

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

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

Some lizards change colors like the chameleon.

Octopuses have three hearts.

Most birds have hollow bones which help them fly.

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.

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

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

Hummingbirds are the tiniest of the bird species.

Seahorses avoid predators by mimicking the color of underwater plants.

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

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

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

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.

Flamingos can only eat when its head is upside down.

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

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

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

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

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

Cheetahs are the fastest land animal on earth. 

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

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

Bats are the only mammals capable of flying. 

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

Butterflies have taste receptors on their feet.

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

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

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

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

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

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

Flamingos hold their breath while feeding. 

Tigers are the largest of the big cat family. 

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

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

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

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

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

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

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

Spiders do not have an antennae while insects do. 

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.

The name hippopotamus means “river horse”. 

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

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

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

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

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

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

Raccoons are smaller relatives of bears. 

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

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

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

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

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

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

Elephants are the only mammals that can’t jump. 

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

The elephant is the largest animal on land.