When an animal moves from the endangered species list to being officially extinct, it's undeniably a sad day. The creature ...

Researchers said the rare species “abruptly disappeared” from the region following an El Niño event. Now it is thriving.

The desert rat-kangaroo — a small marsupial species — was declared extinct in 1994. But, scientists believe it could be alive and “evading detection,” according to a new study.

The desert rat-kangaroo — a small marsupial species — was declared extinct in 1994. But, scientists believe it could be alive and “evading detection,” according to a new study.

Wild-born individuals of the species had not been found in more than 40 years, experts said. ... a rare species once declared extinct in the wild has been rediscovered.

Experts identified the animal as a Leadbeater’s possum, or Gymnobelideus leadbeateri, a critically endangered species “long believed to be extinct in NSW,” officials said.

Trail camera in New South Wales national park recorded a Leadbeater’s possum, critically endangered species long thought to be locally extinct, officials said.

Based on the composition of marine invertebrates found attached to it, the fossil was dated to the Pleistocene era. But exactly which species of early human ancestor it belonged to remained a mystery.

Until recently, Leadbeater’s possums were found only in the state of Victoria and, as of June 2022, had an estimated population of “less than 40” animals, according to Friends of Leadbeater ...