Dusky smooth-hound fishes is their ability to continually replace the teeth in their upper and lower jaws. Smooth dogfish differ from other sharks because of their 10 rows of flat, blunt teeth. The teeth in the upper and lower jaws are similar in size and are asymmetrical with rounded cusps. These teeth are used to crush and grind food, rather than bite it. Their unique dentition is important for their crustacean-based diet. In smooth dogfish, tooth replacement is related to body growth. They grow about 10 cm per every six rows of teeth replaced. That is an increase of 0.03 mm per
Hell hound (Dungeons & Dragons) with an area-effect attack (their fiery breath)." Hell hound (Dungeons & Dragons) In the "Dungeons & Dragons" fantasy roleplaying game, the hell hound is a hyena-like creature which can breathe fire and hunts in packs. It is classified as an outsider from the Nine Hells. The hell hound was introduced to the game in its first supplement, "Greyhawk" (1975). The hell hound appeared in the "D&D Basic Set" (1977), the "D&D Expert Set" (1981, 1983). and the "Dungeons & Dragons Rules Cyclopedia" (1991). The hell hound appears in the first edition "Monster Manual". The "Monster Manual" was reviewed by Don