Fur

High school (ages 12+)
Animals & Nature

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/fur

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the primary evolutionary drivers?Thermoregulation, crypsis (camouflage), and sensory input via specialized hairs (vibrissae)
2. What is the structural components?Guard hairs (protection, water repellency) and underfur (insulation)
3. What does fur do to keep animals warm?Fur has guard hairs and a layer of underfur that trap air close to the skin. This trapped air keeps heat from escaping, so animals stay warm. Tiny muscles can lift the hairs to make the insulation even thicker.
4. How does fur help animals hide from predators?Fur can change color and pattern to match the surroundings, like white fur in winter or brown spots in forests. These colors and patterns break up the animal’s outline, making it harder for predators to see.

Endothermy: The ability of an organism to generate its own internal heat to maintain a stable body temperature.
Vibrissae: Specialized, highly sensitive tactile hairs found on many mammals, commonly known as whiskers.
Crypsis: The ability of an organism to avoid observation or detection by other organisms, often through camouflage.