When you’re as soft and delicious as a cuttlefish, evading predators is a full-time job.

In the scrublands of southern Zambia, birds are practicing what’s known as “brood parasitism”—laying eggs in the nests of another bird species.

Male mice sing surprisingly complex songs to seduce females, sort of like songbirds, according to a new study.

Making a snap decision usually means following your initial reaction—going with your gut. That intuitive feeling sprouts from the limbic system, the evolutionarily older and simpler part of the brain that affects emotion, behavior, and motivation.