Aggression is the number one behavior problem of humans, dogs, cats, and horses (to name but a few mammalian species). It is a perfectly normal survival-necessary behavior when expressed at the right ...

A sample of 4,013 participants from 24 countries were asked about aggression toward siblings and non-sibs, to determine ...

Aggression can be contagious, suggests new research. People who repeatedly observe aggressive behavior have a higher likelihood of engaging in violent behavior themselves, scientists say. Researchers ...