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Book 18, Question 54 · Video

Why Do Many Arctic Animals Have Small Ears and Short Tails?

Video · 1:59 · Crafty Clover explains, from A Million Whys Book 18

Many Arctic animals have small ears and short tails because small body parts lose less heat! Ears, tails, and legs have lots of surface for their size, and heat escapes through sur

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What Crafty Clover says in this video

Intro

Hi there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do many Arctic animals have small ears and short tails?

The Big Idea

Many Arctic animals have small ears and short tails because small body parts lose less heat! Ears, tails, and legs have lots of surface for their size, and heat escapes through surfaces. So shorter parts help save precious warmth.

Heat Escapes

Step one: heat escapes from surfaces. Ears, tails, and legs are skinny, so they have lots of surface for their size. That means they lose heat quickly in cold air.

Short Parts

Step two: shorter parts save heat. Animals in cold places often have shorter ears, tails, and legs than their relatives in warm places. Arctic foxes have small, round ears.

Cooling Off

Step three: compare with warm places. Desert foxes have giant ears that give off extra heat to help them cool down. Every animal's shape fits the place where it lives.

A Closer Look

Let's take a closer look! Here is an Arctic fox, built for the cold. Its small, round ears hold on to warmth. Now, picture a desert fox from a hot place. Its giant ears let extra heat float away.

Quick Facts

Quick facts! This pattern in animals is called Allen's rule. Arctic hares and Arctic foxes have shorter ears than their warm-weather cousins. Fur also covers Arctic fox paws, like furry slippers. Dress warmly and keep your own ears covered on chilly days!

Think Like a Scientist

Now, think like a scientist! Draw an Arctic fox and a desert fox side by side. Compare their ears and tails. Which animal would lose heat faster? Tell a grown-up your answer! Share what you discover with a grown-up.

Outro

Short ears and tails help Arctic animals save warmth. Science is amazing! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

Why I wrote this