Grazing animals are fed only on cheap grain and injected with hormones to fatten them, and farmers cut off chickens’ beaks, so they don’t peck each other to death.
It refers to a facility that engages in breeding a high volume of new puppies for the sole purpose of turning a profit.
Many experimenting labs still get away with keeping animals in horrible conditions. Subjecting them to abusive experiences in the name of innovation.
Here, they are encouraged to attack each other for hours until one or both dogs are injured. Or worse, get killed and can no longer continue.