Spider and Pig Facts Spiders have eight legs. Each leg has seven joints. This makes it easy to move around. The front part of a spider's body is a combination of the head and thorax. The abdomen , in the rear, contains silk spinning organs.
Spiders produce a silk-like thread from six spinnerets located on the abdomen.
Inside are 100-1,000 spinning tubes plus extra large tubes called spigots. Many different kinds of silk thread can be spun by a spider for many different uses. If twisted into a rope, some spiders' thread would be stronger than iron wire. Mother spiders make a silken sac, in which they lay their eggs. They may lay from one to 3,000 eggs at a time.