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
Posavac Hound Posavac Hound The Posavac Hound (FCI No. 154) (Croatian: "posavski gonič") is a breed of dog, originating as a hunting dog of the scenthound type. Croatia is the home country for the breed. The name translates into English as the "Scenthound From The Sava Valley", but is usually translated as the Posavac Hound. The Posavac Hound is a solidly built dog with a somewhat long body, close-fitting drop ears, a long tail, and a gentle expression. The breed has an ideal height around 50 cm (20 ins) at the withers. The short, flat coat is slightly longer on the belly