Category : 3rd Class
Animals that live on land are called land animals. For example, dog, cat, elephant, zebra, cow, etc.
Characteristics of Land Animals
Land animals have certain characteristics that distinguish them from other animals. They are as follows:
Land animals move or crawl
Most of the land animals move or crawl in search of food and shelter. Their bodies are designed for movement. For example, lion, tiger, snake, etc. Kangaroo is an animal that hops.
Land animals do not make their own food
Land animals do not make their own food. They depend on plants or other animals for their food. For example, cow eats grass, lion eats deer and deer again eats grass etc. This is like a chain that the plant and animal form. This chain is known as food chain.
Land animals produce sound
Most of the land animals produce sound. For example, cat mews, dog barks, etc.
Land animals take oxygen directly from air
Land animals take oxygen directly from air and utilise it to get energy.
Land animals have tails
Most of the land animals have tail that help them in their movement. Tail also help them to maintain the body balance. For example, lion, elephant, dog, cat, etc.
Land animals reproduce
Land animals reproduce by laying eggs or by giving birth to young ones. In this way they do not get extinct. For example, cow gives birth to young ones whereas snake lays eggs.
Classification of Land Animals
Land animals can be classified into various categories on the basis of their body features, food they eat and adaptation.
In the first category, land animals are divided into:
(i) Domestic animals
(ii) Wild animals
Animals that live with us are called domestic animals. For example, dog, cat, etc.
Animals that live in the forest are called wild animals. For example, lion, tiger, etc.
In the second category, land animals are classified as:
(i) Milk giving animals
(ii) Draught animals
Milk Giving Animals
Animals that give us milk are called milk giving animals. For example, cow, buffalo, etc.
Animals that work and carry load for us are called draught animals. For example, ox, horse, etc.
In the third category, the land animals are classified as:
(i) Herbivorous animals
(ii) Carnivorous animals
(iii) Omnivorous animals
Animals that eat plants are called herbivorous animals. Teeth of herbivorous animals are broad and flat. For example, cow, elephant, goat, etc.
Cow Broad molar teeth
Animals that eat flesh are called carnivorous animals. Teeth of carnivorous animals are narrow and sharp. For example, lion, wolf, tiger, etc.
Lion Pointed canine teeth
Animals that eat both plants and flesh are called omnivorous animals. For example, dog, cat, bear, etc.
Bear blade like pointed broad premolar teeth
Land Animals are Useful to us
Land animals are useful to us in many ways.in many ways.
Things made from skin of animal
Animals which give birth to babies are called mammals. For example, human being, dog, whale, dolphin, etc.
Aquatic animals live in water. For example, fish, dolphin, whale, etc. Aquatic animals also live in lakes, oceans and rivers.
Some aquatic animals like tortoise, frog, etc. live both on land and in water and are called amphibians.
The streamline body designs of fish help them to swim easily in water. Fish has fins and tail to swim and change direction while swimming.
Classification of Aquatic Animals
Aquatic animals can be classified on the basis of:
(i) Their habitat (the kind of water they live in)
(ii) Food (the type of food they take in)
Classification on the basis of habitat:
Fresh water animals
They are the animals that live in rivers, freshwater lakes, ponds, etc.
The animals that live in seas, oceans, etc. For example, whale, shark, etc.
Aquatic animals can also be classified according to the kind of food they eat. There are two types of aquatic animals as per their eating habits:
Herbivorous aquatic animals
These animals eat aquatic plants. For example, sea horse, parrot fish, etc.
Carnivorous aquatic animals
Carnivorous aquatic animals eat other aquatic animals. For example, shark, whale, etc.
How do Aquatic Animals Breathe?
Most of the aquatic animals have an organ called gill. They breathe with the help of gills. These aquatic animals use gills to extract oxygen dissolved in water. For breathing, fish open and close their mouth to engulf water. Water passes from mouth to gills, where the oxygen is taken out from water and then it passes into the blood. An aquatic animal that breathes with the help of gill dies if taken out of water because gills cannot take oxygen directly from air.
Fish breathes through gills
Some aquatic animals have lungs for breathing. For example, dolphin and whale. They breathe air from the surface of water. Both dolphin and whale have noses on the top of their heads. These aquatic animals can swim in water for a stretch of about 30 minutes without coming to the surface for breathing.
Whales have nose on their head
Reproduction in Aquatic Animals
Most of the aquatic animals lay eggs. Some aquatic animals such as whale and dolphin give birth to their young ones.
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