catmill
n.— «Catmill: A spinning device that dog fighters use to condition their dogs and build up endurance. The dog is chained to one side of the device and chases a small bait animal attached to the other side.» —“Dog-fighting glossary” Fresno Bee (California) Aug. 5, 2007. (source: Double-Tongued Dictionary)
Further reading
A mixed-breed dog is sometimes called a bitsa, as in it’s made from “bits of this and bits of that.” This is part of a complete episode. Transcript of “A “Bitsa” Dog is Bits of This and Bits of That of that”” You know, we were talking...
Critters, co-workers, and clothes: What do you call your favorite mixed-breed dog? There are Heinz 57 mutts and Texas brown dogs in the U.S., while in parts of the Caribbean they’re called potcakes and coconut retrievers. Plus, among firefighters...