Laurent Geslin / Short beaked echidna {Tachyglossus aculeatus} Kangaroo Is, S Australia

Aflo / Short beaked echidna (Tachyglossus aculeatus) Australia, captive

Aflo / Short beaked echidna (Tachyglossus aculeautus)coming out of its burrow, Australia

Aflo / Short beaked echidna (Tachyglossus aculeatus) rolled into defensive ball, Australia

Inaki Relanzon / Australian Short-beaked Echidna (Tachyglossus aculeatus) rolled in a ball for protection, Kangaroo Island, South Australia State, Australia.

Inaki Relanzon / Australian Short-beaked Echidna (Tachyglossus aculeatus) head portrait, Kangaroo Island, South Australia State, Australia.

Tim Laman / Long-beaked Echidna (Zaglossus bartoni) searching for insects. Endangered Species. Foja Mountains, Papua, Indonesia, 2008. (taken during Conservation International Rapid Assessment Program expedition)

Jouan & Rius / Short Beaked Enchidna (Tchyglossus aculeatus) curled up in defensive posture, Francis Peron National Park, Western Australia

Steven David Miller / Short beaked echidna {Tachyglossus aculeatus multiaculeatus} Australia

Doug Wechsler / Close-up of Short beaked echidna (Tachyglossus aculeatus) spines, Australia

Steven David Miller / Tasmanian short nosed echidna (Tachyglossus aculeatus setosus) Tasmania, Autralia

Steven David Miller / Short-beaked echidna (Tachyglossus aculeatus) rolled in a ball for protection, Cape Range National Park, Western Australia, October