well, it is a spider but not a "true spider" it's a sub-genre of a spider. there are lots of difference. a tarantula has hair all over it and no tarantula catches prey in a web they go out and hunt food. but they make webs to live/hide in.for the most part, New worlds are from our part of the world. and they have urticating hairs. old world T's don't have the hair but they have stronger venom