How do they live?

All spiders have fangs, and they may or may not be poisonous, and are used to capture animals. Some bites can be fatal to humans.

Spiders are helpful as far as eating harmful insects go. Some eat each other ( its a spider eat spider world out there ). Females are generally stronger and might eat the male ( talk about hunger ! ). They live anywhere they can find food, some even live under water. There are 30,000 kinds of spiders but there are many more unknown ones. Some are smaller than a head of a pencil, other's are more than 25 cm long ( tarantula .

Spiders and insects have a few differences. They are :

Spiders and insects have some differences ( apart from the spelling ) :

Spider	Insects
They have eight legs.	They have six legs.
They are doomed to a life on ground	They can fly! They can fly. They have wings
They don't have feeler on antennae	They have antennae.

Spiders can be classified under web spinning or hunters ( fangs - check, legs - check ). Hunting spiders run after their prey or wait for them, while others build their webs. The spider's body

Spiders have different shapes, sizes and colors. They have no bones ( That's why, when you crush them, nothing breaks in them ). They generally have a thick skin on top, and have hair or spines. There are two main sections in the spider's body : Cephalothorax with the head and thorax and chest and the Abdomen. A thin waist connects these two.

A spider has the eyes on the head ( BIG surprise ). They have eight eyes sometimes, while other times six. Others may have four or two. Some spiders like the hunting kind have better eyesight. Some have no eyes especially those that live in the dark.

The mouth of a spider is not that well developed, it can only take in liquids. The mouth penetrates the body and sucks the body fluids. The spider can take in solid mater by spraying the digestive juices on the body and sucking the remaining liquid.

The fangs of a tarantula point down from the head, but in the normal 'true' spider, they are crosswise. They can also crush their prey with their chelicerae ( their appendages ).

The legs of a spider consist of four pairs, attached to the cephalothorax. Each has segments. In most, there are two or three claws. The legs are often covered with hairs.

Spinnerets are used to spin silk. They are attached to the abdomen rear. Most have six but some four or two. The surface is covered by hundreds of spinning tubes. The liquid silk comes out of these and hardens.

The production of silk is from a protein in the silk glands. Spiders ( all kinds of spiders in all ) have 7 different kind of glands, depending on species, but none of them have all seven. All have atleast 3, and most have five.

How they use silk :

The spiders ( even those that do not spin webs - the hunting kind ) have silk glands. They help it by helping the spider can use it to escape from enemies. If there is danger in the web of a spider, it simply hangs on it or uses it to enter the ground. Such lines are called draglines.

Many spiders build nests of silk, by using leaves for the job.