Why Do We Love Our Pets?

There's a deep-rooted reason why we humans surround ourselves with dogs and cats and other animals. New research finds we are hardwired to respond to other critters, and the mechanism that makes us do that probably dates back hundreds of millions of years to the time when vertebrates were first evolving. The secret is buried deep in a very old part of the brain, called the amygdala, long recognized as the seat of emotional reaction. Scientists at the California Institute of Technology and the...Full Story
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