If you believe many of the TV news broadcasts and postings on YouTube then you also believe that dogs often help people spontaneously, and often heroically. There are many reports of dogs pulling ...

Every species perceives the world differently, and the distance at which animals can identify humans varies widely. Some rely on eyesight, others on scent, and many use a combination of senses.

New research suggests dogs may sense negative intentions through emotional cues, behavior, and even chemical signals.