Spiders are arachnids. Depending on what source you look at, there are 10-12 different types of arachnids. Spiders are one type of arachnid or one order with the fancy name Araneae (pronounced a-RA-nee-ee). All arachnids have eight legs, two body parts (sometimes fused to look like one), never any antennae, and never any wings. In addition... Continue Reading →