My cat is named Willoughby after the Jane Austen character.
As a kid we named our cat "Moxie" after the soft drink.
We also had a tortoiseshell cat named "Mincemeat" because that's what she looked like.
My ex-in-laws (both Dubs) used to live on a farm and would raise two pigs and two sheep every year (they ended up in the freezer). They named the sheep after bible characters (Barak and Gideon, for example) but they'd name the pigs after pop stars (Steve and Eydie, Sonny and Cher, Donny and Marie).