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

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

Dolphins can hold their breath for up to 7 minutes. 

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

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

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

The name rhinoceros means “nose horn”.

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

Spiders do not have an antennae while insects do. 

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

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

Seahorses avoid predators by mimicking the color of underwater plants.

Spiders are arachnids, not insects.

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

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

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

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

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.

Kangaroos can hop up to 30 feet in one jump.

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

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

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

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

Ostriches have the largest eyes in the whole animal kingdom. 

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

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.

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

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.

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

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. 

Abandoned spider webs are called cobwebs.

Female sharks are larger than male sharks. 

Bats are the only mammals capable of flying. 

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

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

Octopuses have three hearts.

Snails can sleep for 3 years without eating.

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

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

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

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

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

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

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

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

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

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

Hippopotamuses only eat grass.

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

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

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

The ladybug is a symbol of good luck. 

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

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

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

Oysters don’t move once they are adults. 

Each dolphin has a signature whistle used to identify itself.

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

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

Spiders have 8 legs while insects have 6.

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

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

Donkeys are related to horses and zebras.

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.

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

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

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

Octopuses are considered the most intelligent of all invertebrates.

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

Owls are territorial animals which hoot to announce their territory.

Raccoons are smaller relatives of bears. 

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

Hummingbirds are the tiniest of the bird species.

Flamingos can only eat when its head is upside down.

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 elephant is the largest animal on land. 

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

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

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

Leopards can go one month without water.

Dragonflies have serrated teeth. 

The fox belongs to the canine family.

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

Flamingos hold their breath while feeding. 

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

The ladybug is a beetle.

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

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

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

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

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

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. 

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

The pelican has the largest bill of all birds.

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

The snail uses its shell as shelter.

There are over 30,000 known species of fish.

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

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

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

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

The eye of an ostrich is bigger than its brain.

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

Male deer grow new antlers every year.

Cheetahs are the fastest land animal on earth. 

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

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

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. 

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

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

A leopard can walk up to 47 miles.

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

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

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

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

Black bears are not usually black. 

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

Butterflies have taste receptors on their feet.

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

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

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

Penguins huddle together to keep warm in cold temperatures. 

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

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

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

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. 

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

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

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

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

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

Elephants are the only mammals that can’t jump. 

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

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

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

Mice are incredibly clean, tidy and organized.

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

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

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

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

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

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

Most birds have hollow bones which help them fly.

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

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

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

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

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

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

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

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

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

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

Leopards spend most of their lives high in the trees.

Male deer have larger antlers than the female deer.

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

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

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

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

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

The name hippopotamus means “river horse”. 

Some lizards change colors like the chameleon.

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

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

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

Tigers are the largest of the big cat family.