Dusky smooth-hound Dusky smooth-hound The dusky smooth-hound ("Mustelus canis"), also called the smooth dogfish or the dog shark, is a species of houndshark in the family Triakidae. This shark is an olive grey or brown in color, and may have shades of yellow or grayish white. Females live to 16 years and males have a lifespan of 10 years. "M. canis" was the first shark recognised to have viral infections. "M. canis" can be known as smooth dogfish, Atlantic smooth dogfish, dusky smooth-hound, grayish, nurse shark, smooth dog, or smooth-hound. It was originally named "Squalls canis". In Latin, "mustelus" translates to weasel
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