Treat playful kitties and pups to this bestselling motion-activated bird toy, which pet cats can hunt, bite and kick at. The ...

By watching the ebb and flow of the brain's chemical signals, researchers are beginning to disentangle the molecular mechanisms underlying the intrinsic motivation to learn. In a new study of zebra ...

Looking for an effective, low-impact exercise to strengthen your core and boost hip stability? The 'bird dog' is your answer.