Sadly, koalas are listed as an endangered species in large parts of Australia ... some of it peeling off in long ribbons to reveal a smooth, white skin underneath. With the sunlight dappling ...

Koala and Curlew, two endangered female North Atlantic right whales have gone off course, perplexing researchers.

Drought, invasive plants and feral hogs pose threats as well, and these dangers, coupled with the species' small population sizes and low reproductive rates, leave it at high risk of extinction ...