Spiders are small land-based predators with 8 jointed legs, external skeletons, two main body parts, simple eyes, no wings or antennae. They lay eggs but do not metamorphose. All spiders produce silk and many build beautiful webs.
The anatomy of spiders includes many characteristics shared with other arachnids. These characteristics include bodies divided into two segments, eight jointed legs, no wings or antennae, the presence of chelicerae and pedipalps, simple eyes, and an exoskeleton, which is periodically shed.