A team of vets working to capture a group of orangutans living along the banks of the Rungan River, are waylaid by the leader of the group—an aggressive male, named Kasper. A Final Takeoff The ...

That led to a promise that he would be more aggressive when the free-agent market opened in March. Colts fans were not disappointed when Ballard immediately improved the secondary by signing ...

This region becomes active when male mice detect scents from other males and when they engage in aggressive actions. Researchers found that reducing the activity of this brain area lessened ...

A certain species of bird in the Galápagos becomes more aggressive when exposed to traffic sounds, according to new research. A study published in the journal Animal Behaviour states that male ...