A subgroup of air-breathing, terrestrial (land) arthropods, spiders are not actually insects but rather belong to the Class Arachnida (a.k.a. arachnid). Besides spiders, other arachnids include ...

Tarantulas' hairy bodies protect against the scavenging, spider-eating army ants that clean their nests, scientists say. When you purchase through links on our site, we may earn an affiliate ...