Add Yahoo as a preferred source to see more of our stories on Google. Aggression in the animal world can be tricky to define. Some animals may seem harmless in one moment and highly dangerous in ...

When most people imagine territorial aggression in the animal kingdom, they picture lions roaring across the savanna or wolves howling at pack borders. Fierce, obvious, and easy to respect. The ...

A new study of our two closest living relatives finds that, at least in zoos, bonobos may not be more peaceful than ...

In the wild, herbivores are often seen as the peaceful grazers of the animal kingdom—gentle giants simply trying to survive. But in Africa’s unforgiving ecosystems, even plant-eaters can turn ...

Behavioral health in veterinary medicine is often treated as an afterthought, something to address only when a problem arises ...

Gut bacteria create smells that influence behavior, shaping aggression and social hierarchy through the brain.

Animals may behave similarly in cities because they learn from each other how to exploit novel human food sources. For instance, the cockatoos in Sydney have learned to open trash bins. In Toronto, ...

Psychologist Zazie Todd makes the science of dog and cat behavior widely accessible and teaches pet guardians how to use ...