Sleep is one of nature's greatest mysteries, and while we humans aim for seven to nine hours a night, some animals take it to ...

Koalas are a nationally endangered and iconic species in Australia, yet their populations are rapidly declining due to habitat loss, fragmentation, and disease, and very little is known about the fine ...

Koalas spend most of their time in trees — but are in deadly danger when they descend to the ground, new research shows. The marsupials are an endangered species in Australia and their populations are ...

Scientists in Australia are vaccinating wild koalas against chlamydia in an attempt to stop the sexually transmitted disease from wiping out the population. A team of scientists aims to catch and ...

Australia's koalas are being threatened by the out-of-control spread of chlamydia, with many of them suffering severe illnesses or dying early as a result, which has spurred scientists to develop a ...

Canberra, Australia — Koalas were declared officially endangered Friday in eastern Australia as they fall prey to disease, lost habitat and other threats. Federal Environment Minister Sussan Ley ...

Often referred to as "koala bears," koalas are actually not bears, but marsupials like kangaroos, opossums and wombats. And their itty-bitty babies are called joeys, born into the world hairless and ...

Chicago-area residents have long been able to see animals of all kinds from across the world at the 90-year-old Brookfield Zoo, but new history is being made at the suburban landmark. Starting ...

One might think the tree-hugging cuties would be receiving the royal treatment since its Australia’s national icon. And, in some parts of the country, the marsupials are endangered. But, no. The truth ...

A vaccine which could save Australia's endangered koala population from a rampant chlamydia epidemic has been approved for rollout for the first time. University of the Sunshine Coast (UniSC) ...

More than 1 billion animals are believed to have died in the fires. SYDNEY -- Among the thousands of firefighters battling the catastrophic Australia bushfires, there have been four-legged furry ...

GRAND RAPIDS, Mich. — John Ball Zoo has received some adorable new animal ambassadors—but if you want to see them, you'll want to go soon! Two koalas have arrived at the zoo to visit for the summer.