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What are vertebrate animals like?

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Vertebrate animals have an internal skeleton.

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The skeleton has many different bones.

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Bones are strong and support the body.

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A bird skeleton.

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A fox skeleton.

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Vertebrates have a spine with many vertebrae.

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Their spines are flexible, so vertebrates can move in different ways.

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They can run, jump, fly, walk and slither.

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Why do giraffes have long necks?

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What do you think they eat?

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How are vertebrates different?

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There are five groups of vertebrates.

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Mammals, birds, amphibians, reptiles and fish.

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Most vertebrates have two pairs of external limbs.

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But some vertebrates, like snakes, do not have external limbs.

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What limbs does each animal have?

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Decide, then listen and check.

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A. Seals

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Seals have four external limbs that help them to swim and walk

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Their limbs are called flippers

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B. Monkeys

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Monkeys have four external limbs

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They have legs that help them to walk and arms that help them to climb

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C. Ducks

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Ducks have four external limbs

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Their two wings help them to fly

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and their two legs with special feet help them to swim

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D. Fish

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Fish have external limbs to their sides called fins