Spiders are not insects. They have eight legs instead of six. Most spiders have eight eyes but some have fewer than eight. They do not have ears, they feel the sound vibrations with tiny hairs on their legs. Unlike insects, whose adult bodies are divided into three parts, the spiders have only 2 namely the head and the abdomen. Spiders have a unique feature known as spinnerets which are located at the tip of the abdomen for the all-important task of silk production.