Recent observations indicate that Japanese tits use gestures to convey intricate messages, which is uncommon among animals and previously unseen in birds.

The brain activity of dogs that expected one toy but were shown another suggests that canines form mental concepts of everyday objects.

A patient with an unusual variation of the condition helped researchers visualize the demonic distortions he sees when looking at human faces.

Frans de Waal saw animal behavior with fresh eyes and forever enriched our understanding of primates.

Steroids and high levels of carboxylic acids in the body odor of teenagers produce a combination of pleasant and sharp smells.

A search for environmental DNA from critically endangered Pithecopus rusticus frogs turned up DNA from invasive American bullfrogs instead.