Why Do Animals Have Tails? | A2 ESL Science Reading Passage

Use this A2-B1 ESL science reading passage to learn why animals have tails. It includes key vocabulary, reading comprehension questions, and answers for English learners.

Animals use tails for balance, communication, movement, and protection.

Reading Level

A2-B1

Word Count

213 words

Reading Passage

Many animals have tails, but not all tails do the same job. A tail can help an animal move, balance, communicate, or stay safe.

Some animals use their tails for balance. A cat uses its tail when it jumps or walks along a narrow place. A squirrel uses its tail when it climbs trees. The tail helps the body stay steady.

Other animals use tails to communicate. A dog may wag its tail when it is excited or friendly. A cat may move its tail when it feels angry, curious, or nervous. Tail movements can give other animals important information.

Some tails help animals move through water. Fish use their tails to push their bodies forward. Whales and dolphins also use strong tails for swimming. Their tails move water and help them travel.

Tails can also help with protection. Some lizards can drop part of their tail when a predator attacks. The moving tail may distract the predator while the lizard escapes.

Not every animal needs a tail. Humans do not have long outside tails because our bodies move in a different way. We walk upright and use our arms for balance.

So, animals have tails for many reasons. The job of a tail depends on where the animal lives and how it moves.

Different tails can help animals balance, communicate, swim, climb, or escape danger.

Key Vocabulary

Word	Meaning	Example
tail	the part that extends from the back of an animal's body	A dog can wag its tail.
balance	the ability to stay steady and not fall	A cat uses its tail for balance.
communicate	to share information	Animals can communicate with tail movements.
predator	an animal that hunts other animals	A lizard may escape from a predator.
distract	to take attention away from something	A moving tail can distract a predator.

Reading Comprehension Questions

1. Name one job a tail can do.
2. How can a cat use its tail?
3. How can a dog communicate with its tail?
4. How do fish use their tails?
5. Why can some lizards drop part of their tail?

Answers

1. A tail can help with movement, balance, communication, or protection.
2. A cat can use its tail for balance.
3. A dog can wag its tail to show excitement or friendliness.
4. Fish use their tails to push their bodies forward in water.
5. Some lizards drop part of their tail to distract a predator and escape.

Short Summary

Animals have tails for different reasons. Tails can help animals balance, communicate, swim, climb, or stay safe from predators.

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