I have had some pets with unusual names. I had a horse named Ice, that was his registered name too. We currently have 2 cats named Bevis and Butthead. We also have another cat named Neko, which is Japanese for cat, so we have a cat named cat. All of the rest of the bunch have more or less regular names like Kid, Lady, Katie, Cowboy and Mozart. I checked out the AKC website to see what the top dog names were and I was surprised to see the name Bear top the list of favorite names this year. I did have a dog with the registered name of Chief Running Bear years ago.
Here are a few of the more unusual names I have heard for pets: Black Friday, Neko (naming a horse "cat"), Google, Yahoo, Whooper and Klaus for a cat that liked to scratch up the furniture.
For more interesting suggestions on names for dogs visit Unusual Names for Dogs