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Book 32, Question 113 · Video

Why does a frilled lizard open a giant frill?

Video · 1:45 · Crafty Clover explains, from A Million Whys Book 32

When an Australian frilled lizard is startled, it opens its mouth wide and flares a big collar of skin around its neck. The frill is held out by thin rods of cartilage, and it makes the lizard look much bigger. Then it may hiss and race away on two legs. The frill may also help the lizard warm up by catching sunlight.

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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 does a frilled lizard open a giant frill?

The Big Idea

A frilled lizard suddenly opens a giant collar! Whoa! Why does it do that?

Startled

Step one: Startled. When an Australian frilled lizard is startled, it opens its mouth wide and flares a big collar of skin around its neck. It's a surprising sight!

Looking Bigger

Step two: Looking Bigger. The frill is held out by thin rods of cartilage, and it makes the lizard look much bigger. Then it may hiss and race away on two legs.

Catching Sun

Step three: Catching Sun. The frill may also help the lizard warm up by catching sunlight. When relaxed, it folds flat against the neck.

A Closer Look

Let's take a closer look! Flared out. Hold it. Wide open. Caught.

Quick Facts

Quick facts! A frilled lizard's frill opens like an umbrella. They live in Australia. They flee on two legs. They hiss too.

Think Like a Scientist

Now, think like a scientist! Open a paper fan slowly. Imagine the frill expanding. Draw a lizard with its frill closed. Draw it again with the frill open. Which looks scarier?

Outro

When startled, an Australian frilled lizard opens its mouth and flares a big skin frill held out by cartilage rods, making it look bigger. Then it may hiss and run on two legs. The frill may also catch sunlight. Science is amazing! Remember, every big discovery starts with a small question. Keep looking, keep learning, and keep asking why! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!

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