Overview
The following list is an adaptation of data published at the The US Fish & Wildlife Service's Endangered Species Program Website. For the most current data, please refer to US Fish & Wildlife Service database (TESS).
Threatened and Endangered Animals of Massachusetts
Beetle, American burying (Nicrophorus americanus)
Butterfly, Karner blue (Lycaeides melissa samuelis)
Cooter (=turtle), northern redbelly (=Plymouth) (Pseudemys rubriventris bangsi)
Curlew, Eskimo (Numenius borealis)
Eagle, bald (Haliaeetus leucocephalus)
Plover, piping (Charadrius melodus)
Puma (=cougar), eastern (Puma (=Felis) concolor couguar)
Sea turtle, hawksbill (Eretmochelys imbricata)
Sea turtle, Kemp's ridley (Lepidochelys kempii)
Sea turtle, leatherback (Dermochelys coriacea)
Sea turtle, loggerhead (Caretta caretta)
Sturgeon, shortnose (Acipenser brevirostrum)
Tern, roseate (Sterna dougallii dougallii)
Tiger beetle, northeastern beach (Cicindela dorsalis dorsalis)
Tiger beetle, Puritan (Cicindela puritana)
Turtle, bog (=Muhlenberg) northern (Clemmys muhlenbergii)
Wedgemussel, dwarf (Alasmidonta heterodon)
Whale, blue (Balaenoptera musculus)
Whale, finback (Balaenoptera physalus)
Whale, humpback (Megaptera novaeangliae)
Whale, right (Balaena glacialis (incl. australis))
Whale, Sei (Balaenoptera borealis)
Wolf, gray (Canis lupus)
Source
US Fish & Wildlife Service, 2005. 'Threatened and Endangered Species (Massachusetts)' (On-line), The Endangered Species Program. Accessed December 24, 2005.

