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
Basset Hound Basset Hound descends from French dogs that were bred in Great Britain in the late 1800s. The earliest-known depictions of short-legged hunting dogs are engravings from the Middle Kingdom of Egypt. Mummified remains of short-legged dogs from that period have been uncovered in the Dog Catacombs of Saqqara, Egypt. Scent Hounds were used for hunting in both Ancient Greece and Ancient Rome. The basset type originated in France, and is descended from the 6th century hounds belonging to St Hubert of Belgium, which through breeding at the Benedictine Abbey of St. Hubert eventually became what is known as the St