Fish expend energy metabolizing drugs and personal products in fresh water.
When it comes to raising golden-headed lion tamarin babies, everyone cooperates -- especially the grown males.
Scientists studied dingoes to understand the development of social bonds between humans and dogs.
New research suggests the rabies virus uses a snake venomlike compound to manipulate infected animals.
The wood tiger moth employs an arsenal of different weapons to defend itself.
Fossilized duck-billed dino droppings from Grand Staircase-Escalante National Monument are full of rotten wood and crustaceans.