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
Yeth hound (Dungeons & Dragons) Yeth hound (Dungeons & Dragons) In the "Dungeons & Dragons" fantasy role-playing game, the yeth hound is a sinister flying canine inhabiting evil aligned planes. Long and skinny, it is described as resembling as a dog crossed with a lynx, and is deep black in color with yellow eyes. Although lacking wings, the creature is inexplicably capable of flight. Within the game, packs of yeth hounds only hunt during the night and never venture out during the day. If abroad during the day, the sunlight causes them to quickly fade away to the ethereal plane where they cannot return. Yeth