Spiders do not have an antennae while insects do. 

Penguins huddle together to keep warm in cold temperatures. 

Oysters don’t move once they are adults. 

Male deer have larger antlers than the female deer.

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

The pelican has the largest bill of all birds.

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

Elephants are the only mammals that can’t jump. 

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

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

Tigers are the largest of the big cat family. 

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

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

Male deer grow new antlers every year.

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

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

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

Raccoons are smaller relatives of bears. 

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

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

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

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

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

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.

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

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

Each dolphin has a signature whistle used to identify itself.

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

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. 

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

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

The ladybug is a beetle.

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

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

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.

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

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

There are over 30,000 known species of fish.

The ladybug is a symbol of good luck. 

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

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

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”. 

Hippopotamuses only eat grass.

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

Bats are the only mammals capable of flying. 

A leopard can walk up to 47 miles.

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

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. 

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. 

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

Some lizards change colors like the chameleon.

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

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

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

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

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

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

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

Hummingbirds are the tiniest of the bird species.

Black bears are not usually black. 

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

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

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

The elephant is the largest animal on land. 

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

Most birds have hollow bones which help them fly.

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

The name hippopotamus means “river horse”. 

Dolphins can hold their breath for up to 7 minutes. 

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

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

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

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

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

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

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

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

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

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

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. 

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

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

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

Snails can sleep for 3 years without eating.

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

The eye of an ostrich is bigger than its brain.

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.

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

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

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

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

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

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

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

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

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

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

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

Female sharks are larger than male sharks. 

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

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

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

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.

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

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 snail uses its shell as shelter.

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

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

Owls are territorial animals which hoot to announce their territory.

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.

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

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

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

Butterflies have taste receptors on their feet.

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

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

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

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

Donkeys are related to horses and zebras.

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

Kangaroos can hop up to 30 feet in one jump.

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

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

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

Octopuses are considered the most intelligent of all invertebrates.

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

Spiders have 8 legs while insects have 6.

The fox belongs to the canine family.

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

Flamingos can only eat when its head is upside down.

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

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

Leopards can go one month without water.

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

Mice are incredibly clean, tidy and organized.

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

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

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

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. 

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

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

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

Cheetahs are the fastest land animal on earth. 

Spiders are arachnids, not insects.

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

Seahorses avoid predators by mimicking the color of underwater plants.

Octopuses have three hearts.

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

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. 

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

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

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

Dragonflies have serrated teeth. 

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

Abandoned spider webs are called cobwebs.

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

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.

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

The name rhinoceros means “nose horn”.

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

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

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

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

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

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

Flamingos hold their breath while feeding. 

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