Why Do Spiders Have Eight Legs?

What Crafty Clover says in this video

Intro

Hey there, curious minds! I'm Crafty Clover! Let's discover something amazing. Why do spiders have eight legs?

The Big Idea

Spiders are arachnids, not insects. The arachnid body plan comes with eight walking legs, while insects get six. That is one big clue for telling them apart.

Not an Insect

Step one: not an insect. Insects like beetles and bees have six legs. Spiders belong to another group, the arachnids.

Eight for Walking

Step two: eight legs for walking. A spider has four pairs of legs, and they do all the stepping. Extra legs help it climb, steady itself, and walk in any direction.

Legs Sense the Web

Step three: legs help with silk and the web. Legs handle silk threads as the spider builds. When something shakes the web, the tug travels up a leg, and the spider walks over to it.

A Closer Look

Let's take a closer look at a spider! Eight legs help a spider walk and climb. The spinnerets are the parts that make silk. A spider has two main body parts, instead of the three that insects have. And the eyes help the spider sense its surroundings.

Quick Facts

Quick facts! Insects have three body parts and six legs. Spiders have two main parts and eight legs. Some spiders can regrow a missing leg after a molt. Harvestmen look like spiders, but they belong to a different arachnid group. Look, but do not poke. A grown-up can move a house spider outside.

Think Like a Scientist

Now, think like a scientist! Count the legs on a photo of a fly and a photo of a spider. Who has six legs, and who has eight? Which one is the insect? Write down your answer, and become a leg-counting expert!

Outro

Eight legs make spiders amazing walkers and web builders. Stay curious! Crafty Clover can be found on Amazon Books, Google Bookstore, and Apple Books. Available for purchase or download! Bye for now!