'Every now and again I receive an email message I ignore after reading the subject line. I know I'm not alone in following this rule of thumb, but today I broke down and opened a message the subject line of which read "Scientists Declare: Nonhuman Animals Are Conscious". I honestly thought it was a joke, likely from one of my favorite newspapers, The Onion. However, it wasn't.

My colleague Michael Mountain published a summary of a recent meeting held in Cambridge, England at which "Science leaders have reached a critical consensus: Humans are not the only conscious beings; other animals, specifically mammals and birds, are indeed conscious, too." At this gathering, called The Francis Crick Memorial Conference, a number of scientists presented evidence that led to this self-obvious conclusion. It's difficult to believe that those who have shared their homes with companion animals didn't already know this. And, of course, many renowned and award-winning field researchers had reached the same conclusion years ago.'

Read more: Scientists Finally Conclude Nonhuman Animals Are Conscious Beings