These monsters are created when a Plaga infects a large dog. Brutal, savage creatures, they could hardly be called "man's best friend". From the outside, they resemble regular dogs, but cases have been confirmed wherein their heads split open to reveal the Plaga itself.Plaga-infested creatures carry some of the traits of their original species: in the case of dogs, they maintain their agility and ability to fight ferociously in tight quarters.