Cruz the African Grey varies his wake-up call each day just to keep things interesting. That morning, it was a little song ...

A white-necked jacobin hummingbird chick surprises scientists, scaring away wasps by mimicking a poisonous caterpillar.

A rare toad changed the fate of a river by becoming the first amphibian to halt a hydroelectric dam. It's now in trouble.

Flying nowadays can feel like you died and went to dog heaven. In the most ridiculous instance in May, San Francisco influencer Piêtra Luccas brought her so-called service Great Dane aboard a United ...

Emily Kwong and Berly McCoy of NPR's Short Wave talk about why swearing might improve physical performance, how birds' bills changed during the pandemic and why scientists are sampling whale breath.

Its size is impressive, its behavior fascinating, and its camouflage nearly perfect: The great potoo looks like a broken branch during the day–and is a skilled hunter at night. In the tropical forests ...

We were overwhelmed by the response to our annual Letters to Santa feature, with more than 1,250 letters submitted this year. Due ...