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
Rufus Hound twice on ITV's "Thank God You're Here" in the UK, after initially working as the warm-up act. In late summer 2008, Hound joined the panel show "Argumental" as the Blue Team Captain. Hound was the narrator for the gaming series "Playr" and presents "What Do Kids Know?" on UKTV-owned channel Watch. Hound took part in "Let's Dance for Sport Relief", dancing to Cheryl Cole's "Fight for This Love" and won the final of the series on 13 March 2010. Partnered with Flavia Cacace, Hound won the 2013 "Strictly Come Dancing" Christmas special. Hound hosted the year 2000 edition of "My