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
Istrian Shorthaired Hound Istrian Shorthaired Hound The Istrian Short-haired Hound (FCI No. 151, original name is "Istarski Kratkodlaki Gonič") is a breed of dog from Istria in Croatia, descended from a very old type of scenthound. This hound is the slightly smaller counterpart to the longer-coated Istrian Coarse-haired Hound from the same region. The Istrian Short-haired Hound has a short, smooth, glossy, hard coat, primarily white with sparse patches of orange. The breed has a typical well-muscled hound body, with long legs and a long tail. The head is fairly broad and flat (not domed on top) with short (for a hound) triangular