Thursday, April 26, 2007

Who is afaid of spiders? im here to let you know that spiders arent that scary. They are just animals that dont hurt people unless the are afraid that you are going to hurt them.
Spiders belong to a group of animals called invertebrates. An invertebrate is an animal that does not have a backbone. Animals that have a backbone are called vertebrates. Insects, sea shells, worms, and octopuses are some other animals that do not have backbones.

Spiders are a special kind of invertebrate. Spiders are not insects. They belong to a group of invertebrates called arachnids. Arachnids are soft-bodied animals that have eight legs. Insects have only six legs. Spiders are not insects because they have eight legs.

Spiders have a two-part body. Insects have three-part bodies. The spider's head is on the part called the cephalothorax. Cephalo means head. Thorax means chest, so this part of the spider is a head-chest! The cephalothorax is a very important spider body part. The spider's legs and eyes are attached to it. The stomach and brains of the spider are inside of it. The second part of the spider's body is called the abdomen. This part of the spider's body has the heart, guts and silk-glands inside of it. The silk-glands are the part of the spider's body that make the thread for its web.

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