Scientists have recorded same-sex behavior across many animal groups, including mammals, birds, and reptiles. Still, the meaning of that behavior depends on the species and the context. Behavior that ...

Science has treated same-sex sexual behavior as an “evolutionary conundrum” because it (generally) doesn’t help animals to reproduce, thus ensuring that their genes get passed down and their species ...

A new video of a Southern Pacific rattlesnake rattling when touched offers a vivid example of how quickly animal behavior can shift from calm to defensive. Wildlife research shows these changes follow ...

Add Yahoo as a preferred source to see more of our stories on Google. Animal nervous systems may lose their adaptive edge with climate change. PM Images/DigitalVision via Getty Images Human-driven ...

A tiger walks the same worn groove along the edge of its exhibit like a broken record. A parrot methodically plucks out its own feathers until bare skin shows through. To a casual visitor, these can ...

Animal behavior research relies on careful observation of animals. Researchers might spend months in a jungle habitat watching tropical birds mate and raise their young. They might track the rates of ...

Some of the foundational studies in the field were neither ethical by today’s standards nor replicable. But we can do better. Unfortunately for both the field and the dogs themselves, the truth is ...

On Aug. 21, 2017, a solar eclipse shrouded The Riverbanks Zoo and Garden in Columbia, South Carolina, in near-total darkness for 2½ minutes. In the time leading up to the darkness, during it, and ...

On Aug. 21, 2017, a solar eclipse shrouded The Riverbanks Zoo and Garden in Columbia, South Carolina, in near-total darkness for 2½ minutes. In the time leading up to the darkness, during it, and ...

Several years ago, Christian Rutz started to wonder whether he was giving his crows enough credit. Rutz, a biologist at the University of St. Andrews, in Scotland, and his team were capturing wild New ...