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
Pharaoh Hound Qing was later shown in the United States and went on to become the top winning Pharaoh Hound in the history of the breed. His American Kennel Club ranking as of December 2011 included placing as the number 8 dog all breeds, the number 2 hound, and the number 1 Pharaoh Hound. The Kelb tal-Fenek is not the only breed of dog specific to the tiny islands of Malta. There is also the Kelb tal-But ("pocket dog", a toy breed), Kelb tal-Kaċċa ("hunting dog", a breed used for bird hunting), and lastly a type of Mastiff which is now extinct