Many mammals that eat grass need a long time to digest food. They also live in herds for safety because multiple animals together can spot danger more quickly and react accordingly.

Herds of zebra, wildebeest, and antelope run away very fast when faced by danger while animals like the shaggy musk oxen fight against their predators.

Primates consist of monkeys and apes. We are part of the primate family too. Most primates use their feet as extra hands.

Chimpanzees are found in the hot, damp forests of Africa and are always on the move in search of food. This is why they do not have a particular home. Instead, each animal builds a new nest for itself every night. There is a leader in every group who is respected by the others.

Due to their hand like wings, they can easily change the shape of their wings in air.

When resting, bats' wings fold up like umbrellas and they sometimes tuck their heads inside their wings. Most bats live in colonies in caves.

Bats squeak while flying. This is so that if there is something ahead, the squeaks make an echo which the bats can hear with their large and sensitive ears. This method lets bats know how far away something is too.

Bats eat insects (moths are their favorite), fruit, and the vampire bat from South America drinks animals' blood.

Feathers aren't live parts of birds. Birds change feathers at least once an year in a process lasting 4 to 6 weeks called moulting.

Feathers help birds fly and keep them warm in cold weather. Feathers can also be waterproof and their colors can attract mates or act as camouflage.

Birds that perch on branches have toes that curl around the branches for a tight grip.

Birds that find food in the ground have short, blunt, rake-like toes that help scratch the ground.

Birds that are good climbers have two toes pointing forwards and two pointing backwards. Most tree dwellers hop on both feet.

Most flightless, fast-running birds have three toes on each foot while the ostrich is the only two-toed bird.

All birds have wings. Most birds can fly while some don't like to and others are flightless.

Wings are a few slim bones covered with thin skin with feathers attached.

A bird usually jumps or falls to get into the air and then begins flapping its wings in upstrokes and downstrokes. When landing, a birds spreads out its wings and tail like a brake.
Birds have differents shapes and sizes of wings depending on their lifestyle.

All birds have bills or beaks that are used as special tools to get the food that a bird wants.
Bills are also used to preen (smooth) a bird's feathers.
Some birds have places near the tails that give off an oily liquid when rubbed. This liquid is smeared onto the bill and then rubbed through the feathers, making them glossy, waterproof and smooth.
Other birds clean themselves using a powder that comes from special feathers.

Bills are also used by birds to help carry building materials and make a nest.

Birds like woodpeckers have chisel-like bills that are used to pound against a tree and make a hole in the bark to get at the insects.

A spoonbill which wades by the seashore with its head underwater has a shovel-like beak which it uses to shovel small fish and other food in its mouth.

Sparrows, who eat things from the ground have tweezer-like bills.

Hummingbirds, who sip nectar from flowers have a long hollow tube as a bill which acts like a drinking straw.

Herons have long and pointed, spear-like bills to lift fish out of the water.

Birds usually nest in springtime and do so to lay eggs. Birds build different kinds of nests according to where they live.

Eggs need to be kept warm for the babies inside. Keeping eggs warm by crouching over them is called incubation.

When the babies are full sized, the begin to push their way out using a sharp spike on their bills, called an egg-tooth.

Many baby birds are completely helpless when they hatch and need to be taken very good care of. Since they don't have feathers at this stage, the parents need to keep them warm by brooding, which is a process in which the crouch over the babies and cover them with their wings.

They are the largest birds in the world which makes it impossible for their wings to support them enough to be able to fly. Instead, they run as fast as racehorses and their kicks are powerful enough to rip open a lion's body.

They live in flocks in the dry parts of Africa, searching for food and water. They usually eat plants, but may also eat small reptiles. They can survive for long without water if they have enough green plants to eat.

Ducks, geese and swans are known as waterfowl because they spend most of their time in various water bodies.

These ducks put their heads underwater with their feet and tails sticking up straight to feed on water insects, plants, and snails.

Mallards, widgeons, and teals are some dabbling ducks. Even swans feed this way too, but they mostly eat plants.

Diving ducks like Pochard ducks dive down and eat underwater. They mostly eat water plants.

Geese usually feed on land. They eat grass, seeds, and plants.

Swans and geese make untidy heaps of grass and plants close to water as nests.
Dabbling ducks, and many diving ducks, nest on the ground.
Shelducks make nests in empty rabbit holes and other animal burrows.

Before building nests, special "nest-down" feathers grow on the breasts of females and after she lays eggs, she plucks these feathers off and lines her nest with them.

Grebes are very skilled underwater but are extremely clumsy on land. They are called water witches.

Puffins live in large colonies and like to spend a lot of time in the sea.

Pelicans have large pouches on the lower parts of their bills that they use to scoop fish out of the water.

Coughs up the fur and large bones of prey in a lump called a pellet.

Most of them hibernate in winters

After 3 months they can breathe with lungs and leave the water. Their tails shrink and vanish.
They are full grown.

Feelers are used for touching and feeling, and sometimes smelling.

They weave webs made of special silk which is a liquid that becomes a thin, strong thread when it comes out of spinnerets (tiny holes at the back end of spiders).

Some have poisonous bites. Tarantulas' bites are like bee stings, and they can be tamed and kept as pets.

Spiders spin a ball of silk around their eggs. When the babies hatch, they are blown away on long threads of silk.

Come in colors like red, yellow, and black. These bright colors are probably warnings to birds that ladybirds should be left alone as they taste bad.

They have wing covers; this are one of the things that make them beetles.

Very useful because they eat aphids and other insects that destroy crops.

All insects grow from eggs to adult in four stages called metamorphosis. Some of them only go through 3 stages.

Termite towers (nests) are sealed-up cities with many tunnels and rooms. Termites who live here have different jobs.

Worker termites do all kinds of tasks, like tending to the fungus gardens.

The queen lays upto 40,000 eggs a day for which she needs to eat a lot. This causes her to be much bigger than the others.

Army ants do not make nests, sometimes they 'make camp' and for about 9 days, the queen lays thousands of eggs while other babies are slowly becoming adults through metamorphosis. When the eggs hatch and the new adults arrive, they are very hungry and so begins the army ants' march for food. Most kinds of army ants are blind, hence, they just follow the trails of the ant in front of them. Worker ants carry the babies along with them.