Earless dog used as bait in fights rescued - Orange County Register
essentially a dog that is confined and attacked by fight dogs that are training. Rescuers believe Phoenix, about 5 years old, was used as a bait dog – essentially a submissive dog that is confined and attacked by fight dogs-in-training. He was found as a

OK Go video goes straight to the dogs - Today's THV
OK Go is known for its complex one-continuous-take videos, like the one featuring a Rube Goldberg-like contraption big enough to fill an entire warehouse, but that was engineering, this required training, each dog had its own trainer giving it cues.