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 The Basset Hound is a short-legged breed of dog of the hound family. The Basset is a scent hound that was originally bred for the purpose of hunting hare. Their sense of smell and ability to ground-scent is second only to that of the Bloodhound. Basset Hounds are one of 6 recognised basset-type breeds in France. The name "Basset" is derived from the French word "bas", meaning "low", with the attenuating suffix "-et", together meaning "rather low". Basset Hounds are usually bicolours or tricolours of standard hound colouration. Bassets are large, short, solid and long, with curved sabre