Guides to Endangered Species

Thylacine

Already Extinct

An endangered species or subspecies is one that is in danger of becoming extinct throughout its range or in a portion of its range. A threatened species or subspecies is one that is likely to become endangered if it is not protected.

Read the list of endangered creatures by:   National Geographic Society's list

Species of the continental United States that are classified as endangered or threatened:  eNature's list