Australia approves vaccine to protect koalas from chlamydia Chlamydia in koalas can cause blindness, infertility and even death. Chandelis Duster
Insect populations drop even without direct human interference, a new study finds Research published this month found that even in pristine, untouched areas, insect populations are still on the decline. Climate change is a likely culprit. Alana Wise
Male tarantulas are moving and wooing their way across Colorado These hairy spiders spend almost all of their lives underground. But when it's time to mate, they must brave the great outdoors before they perish. Ayana Archie
By listening to these birds for decades, scientists track signs of a changing forest Scientists tracking the birds in an experimental forest in New Hampshire have also tracked changes in the forest ecosystem over decades. Ari Daniel
Greetings from Guhagar, India, where newly hatched turtles get some help into the sea Far-Flung Postcards is a weekly series in which NPR's international team shares moments from their lives and work around the world. Diaa Hadid
How New Zealand wildlife sanctuaries are working to protect the country's unique birds New Zealand has some of the most unique birds in the world. Many are endangered, so the country has a nationwide project to save them. It's trying to eradicate invasive animals that are harming them. Lauren Sommer
A spine-tingling discovery: This dinosaur had spiked body armor In a new paper, researchers describe a bizarre dinosaur with thorny spines along its neck and back that made its home in Africa more than 165 million years ago. Alana Wise
Giraffes aren't just one species — they're four We're used to thinking of giraffes as one species. Turns out, there are actually four distinct species of the world's tallest mammal. Mallory Yu
A lesson learned after pets were left behind in Hurricane Katrina: Save the animals People were forced to leave their pets behind during Hurricane Katrina, creating an unprecedented animal welfare crisis that has shaped the country's disaster response ever since. Nathan Rott
These fish may feel pleasure while being groomed by other fish An experiment with threadfin butterflyfish finds that these fish may experience pleasure while being cleaned by bluestreak cleaner wrasse — suggesting this capacity goes far back in animal evolution. Ari Daniel
