Mustelus also known as the smooth-hounds is a genus of sharks in the family Triakidae. The name of the genus comes from the Latin word mustela, meaning weasel. It should not be confused with the genus name Mustela, which is used for weasels.
A smooth-hound can grow up to 159 cm (5 ft. 3 in.) long and weigh more than 13 kg (29 lb).