Let me start by saying I almost never review books about
animals. Everyone who has ever written one has an opinion and
normally, its just that — his or her opinion. And there are as
many of those as there are people.  Today's column is no
different, even though it is about a book about dogs.  Last
week, I received Dr. Gregory Berns' book "How Dogs Love Us, A
Neuroscientist and His Adopted Dog Decode the Canine Brain," and
I couldn't wait to have a few minutes to sit down with a good
read. What I discovered was so much more. Although it was filled
with unfamiliar scientific terms, it was also surprisingly easy
to read.  Every book ever written about what dogs are thinking
is what someone thinks dogs are thinking.  This was something
completely different.  Berns took a premise all dog lovers have
always known and proved it through the science of brain mapping.
Over two years, Berns, a neuroscientist at Emory University in
Atlanta taught his dog, Callie, a shelter-rescued rat terrier,
to enthusiastically walk i