Eastern gray squirrels appear to ease up on vigilance behavior when the birds sound calm.

The bioluminescent Anomalops katoptron can coordinate its schooling behavior after dark. 

Nest predation of shorebirds that raise young in the Arctic are up threefold since the mid-20th century, and climate change may be to blame, according to a study.

The bombardier beetle forced its devourer to vomit it out by releasing explosive, toxic chemicals.