This children’s article, Why do dogs wag their tails?, has been written for native English speakers and learners of English as a second or foreign language. It can help children build vocabulary, learn about animal behaviour, and discover why tails are so important for dogs. Written by Mark Pulley, a teacher and writer who creates fun and informative news articles for English learners.
A tool for communicating
When you see a dog wagging its tail, it’s easy to think it’s always happy. But a dog’s tail is actually a tool it uses to communicate. Dogs can’t speak like humans can, so their tails act as a type of sign language. How fast or slow they wag, the position of the tail, and even the direction, can all give clues about how a dog is feeling.
For example, a high wagging tail often shows confidence or excitement. A slow wag with the tail held low can mean the dog is unsure. Some scientists even say that wagging more to the right shows happiness, while wagging to the left can show nervousness!
Tails and balance
A dog’s tail isn’t just for communication; it also helps with balance. When dogs run, jump, or turn quickly, their tails act like a counterweight, helping them stay steady. Imagine a tightrope walker holding a long stick to balance; that’s what a tail does for dogs.
This is especially useful for dogs that hunt, herd, or chase after balls in the park. Their tails give them better control of their movement, making them faster and more agile.
More than wagging
Not all tail movements are happy ones. Sometimes, if a dog holds its tail stiff and high, it could be showing aggression or warning another animal to stay away. If the tail is tucked between its legs, it usually means the dog is frightened.
Tails are also important for puppies. They learn to wag and use their tails when playing with their littermates. Over time, they develop the “dog language” that adult dogs use every day.
Article vocabulary list
- Communicate: To share information or feelings with others.
- Confidence: A feeling of being sure of yourself.
- Nervousness: A feeling of being worried or unsure.
- Counterweight: Something that balances another object.
- Agile: Able to move quickly and easily.
- Aggression: Angry or threatening behaviour.
- Littermates: Brothers and sisters born in the same group of puppies.
- Develop: To grow or improve over time.
Comprehension questions
Just click the plus (+) to see the answer
1. What is the main reason dogs wag their tails?
A) To scare other animals
B) To communicate
C) To keep warm
Answer: B) To communicate
2. How does a dog’s tail help with balance?
A) It works like a counterweight
B) It makes their legs stronger
C) It slows them down
Answer: A) It works like a counterweight
3. What does it usually mean when a dog tucks its tail between its legs?
A) It’s frightened
B) It’s very happy
C) It wants to play
Answer: A) It’s frightened
4. What do puppies use their tails for when they are young?
A) To chase birds
B) To practise communication while playing
C) To stay warm in winter
Answer: B) To practise communication while playing
Mark is a writer and EFL teacher from England with eight years’ experience. He’s passionate about travel, sport (especially football), animals, nature, and history, and enjoys helping children explore the world through language and learning.
