Why don't some cultures feed visiting kids? Reciprocity, not rudeness, explains it, and the logic makes more sense once you ...

Jellyfish are opportunistic predators but it seems they've added these typically seafloor dwelling worms to the menu.

Yuji, a 6-week-old patas monkey, wakes up every day clinging to a stuffed dog. This plush companion acts as a surrogate mom ...

A new study suggests that domestic cats get bored of monotonous meals. Switching up their food—or even just nearby ...