Dewlap facts for kids
A dewlap is a loose flap of skin that hangs under the neck of many animals. You might see it on a lizard, a cow, or even some dogs. It's a normal part of their body! Sometimes, the word "dewlap" can also describe a "double chin" on a person. It can also refer to the stretchy throat pouch of a frog, which is called a vocal sac.
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What is a Dewlap?
A dewlap is basically extra skin that hangs down. It's often found on the neck or throat area. This skin can be quite noticeable, especially on larger animals. It's not just a random piece of skin. It serves different purposes for different animals.
Why Do Animals Have Dewlaps?
Animals use their dewlaps for several reasons. One common use is for showing off. For example, some lizards, like iguanas, can extend their dewlaps. They do this to look bigger and more impressive. This can help them attract a mate. It can also scare away other animals that might be a threat.
Another reason for a dewlap is to help with body temperature. Some animals, especially those in hot climates, have large dewlaps. This extra skin has many blood vessels close to the surface. When blood flows through these vessels, it can cool down. This helps the animal stay cool in the heat.
Dewlaps and Animal Development
Sometimes, the appearance of a dewlap tells us something about an animal's age or stage of life. For instance, a female rabbit will develop a dewlap when she is old enough to have babies. This dewlap is useful for her. She can pull fur from it to line her nest. This makes a soft, warm bed for her young.
Images for kids
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A mastiff with a dewlap, seen connecting from the neck to the lower jaw.
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A zebu with a large dewlap.
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An iguana with an extended dewlap.
