Think about this -

[edial]

But there are billions upon billions of people who believe or believed in God, yet there is no one that I know of who says that his dog speaks to him.
Would you like to restate your analogy?

Thanks,
Ed

On the night of August 10, 1977, Berkowitz was taken into custody by New York City Police Department homicide detectives in front of his Yonkers apartment building. He was subsequently indicted for eight shooting incidents. He confessed to all of them, and initially claimed to have been obeying the orders of a demon manifested in the form of a dog belonging to his neighbor "Sam." Despite his explanation, Berkowitz was found mentally competent to stand trial.

Wikipedia || David Berkowitz

Yes, you have one example.