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
Sleuth hound borders of England and Scotland. In addition it is established by the laws of the border that he that denies entry to the sleuth-hound on an occasion of pursuit and searching for goods shall be held as an accomplice to the crime and theft committed. Sleuth hound The sleuth hound (from Old Norse "slóð" "track, trail" + hound) was a breed of dog. Broadly, it was a Scottish term for what in England was called the bloodhound, although it seems that there were slight differences between them. It was also referred to as a 'slough dog', (or 'slewe dogge'), and