The Cerberus is a B.O.W. created by administering the T-Virus to a Doberman, a large breed of dog suitable for military use. Although the effects of the virus include considerable skin decay, the Cerberus's speed, leaping ability, endurance, and aggressiveness are all substantially enhanced, and it retains the canine trait of being excellent at attacking in packs. Its low price point, efficiency as a weapon, and excellent cost-effectiveness have made the Cerberus an outstanding success.
While the dogs of Resident Evil are no doubt familiar to most fans, some players may not be aware that there are actually two different types. The Cerberus described above was developed as a B.O.W., but other dogs in the series have simply undergone incidental zombification, for instance after eating T-Virus contaminated food, and are usually known simply as Zombie Dogs. Both are equally despised as difficult targets to track due to their fast, erratic movements.