The spider is an arthropod with two body parts, four pairs of legs, no wings, and no mouth chewing.

All types of spiders are classified into the order of Araneae. Spiders together scorpions, ketonggengs, and mites, enter the Arachnida class. Spiders are common cannibal predator animals, they charge their own kind though are insects.

Almost all types of spiders are able to inject the poison through its purpose. However, of the thousands of species of spiders, only about 200 species are equipped for humans. No spider produces a net, but all spiders are capable of producing silk thread, which is a string of protein fibers other than strong.

Silk fibers are useful for helping the movement of spiders, swinging from one place to another, trapping its prey, making egg bags, protecting nest holes, and so on. Medically, the spider can be used as a healing animal, not by using the body but using a spider-dominated protein fiber. Pharmacologists at the University of Wyoming USA use the Nephila spider thread as a sewing thread for highly sensitive surgery, such as: surgery on the tendon, eye surgery, or neural network.

The web spider can indeed connect muscles (tendons) or recover damaged ligaments. In addition to being very strong, these natural fibers do not cause infection. However, scientists have not found evidence that spider webs can kill germs. So far, experimental results show that the spider does not produce a body response.