A hell hound is a big, powerfully built dog with short, rust-red fur; its markings, teeth, and tongue were sooty black.
Hell hounds are the dogs of the Nine Hells. They appear to be canines with emaciated features, fire spouting from their red glowing eyes, and smoke pouring from their fanged mouths. The average hell hound stands 4.5 feet (1.4 meters) at the shoulder and weighs about 120 pounds (54.4 kilograms).
Hell hounds prefer to hunt in packs and will use their fiery breath on an opponent first and then close in for the kill.
Hell hounds use wolf-like tactics. They organize in packs, surrounding their prey, and attack one at a time until the target became fatigued or falls to the ground. If singular attacks do not seem to be effective, the pack will each breathe a gout of flame at the target. The pack then charges in all at once to slay their prey with fiery bites.