I had a horse named George once. None of us in the family could think of a good name for him, and one day a lady and her daughter stopped by (we live on a highway) to see the new colt they'd seen from their car as they were passing. She asked his name, and we told her we hadn't thought of one. So she said, "C'mere, George!" and he came to her. It stuck.
Most of my horses' names have grown out of the names of their sires or dams, though. Like my colt Gingerbread was out of my pony Ginger, and our other colt Boomer, whose nickname was short for Cherryboom, was out of Cherry and sired by Boomerang.
Then there's our dog Shady, short for Shady Lady, because all she ever seemed to do was lie in the shade.
I did have a cat named Chopin for a while. But usually they were more mundane names. We've had 2 or 3 Tobys over the course of the last 20-25 years. The current dog is named Skippy because she once got her head stuck in a peanut butter jar as a puppy.