Brain scans offer the first evidence that dogs can read certain human facial expressions.
The special scent made only by breeding queens keeps the commoners in her colony from fighting or reproducing.
Humans think farts are funny — but some animals rely on farts for flotation, communication and more.
Humans could learn from chimpanzees and bonobos. When things get tense, these apes turn to group members for hugs, touches and other physical comfort.
Like the three-banded armadillo, this device can roll up to shield its innards, such as sensitive electronics and a small payload.
Oceanographer Lily Dove uses remote robots to study Antarctica’s perilous oceans.
Meats were important, too. But throughout human evolution, fruits may have fueled much of the brain growth in our primate cousins and early ancestors.
This tactic expands killer whales’ already broad range of behaviors for taking down prey.
Humans, platypuses, whales and kangaroos show the diversity of this vertebrate group.
