D-Dog is an animal found in the more remote parts of north-western Pensylvania. They're are the rarest species in existance and its existance is known to very few people around the world. Scientists have concluded the D-Dogs are the most aggreasive creatures on the planet, the evidence for this is that the only people to have met a D-Dog are in no fit state to describe it.
In the area where these creatures are found, people use the phrase "dogged" to describe the state of a victim of a violent act. The word "dogged" was first used after a victim was discovered missing several limbs and the only words he managed to speak were "I got dogged".