A young teacher at a Chicago public school was recently charged with punching his own dog to death in the bathroom of his home. Derek Fierro had adopted Doc, a yellow Labrador mix, as a puppy from the Chicago Canine Rescue Foundation. The two lived together happily for nearly a year before the teacher killed the very animal he had promised to take care of. Doc had apparently refused to get into the bathtub to be washed after soiling himself when his owner lost his temper and punched the dog until he died from his injuries. Derek Fierro was charged with aggravated animal cruelty after turning himself in to police, who found the dog’s body in the trunk of Fierro’s car.