The semordnilap (palindromes spelt backwards for those of an erudite displacement) of GOD is DOG.
Many ancient civilizations actually worshipped animals as Gods, for example In Sumeria, Kusarikku had a human head and torso, with bovine ears and horns and hindquarters, known as the Bull Man.
The Aztecs portrayed a dog as the God of death and Chinese astrology recognizes dogs. Ironically they still have a tendency to praise the awe of our canine companions on a plate covered in sweet and sour sauce.
And of course, I love my dog.
So, what made man move away from worshipping animals to something so obscure as to be invisible and virtually indescribable?