Speckled smooth-hound seabed on the continental shelf at depths of between . Reports of this fish occurring in the Atlantic Ocean off the coast of Argentina are thought to be erroneous, and are likely to refer to the narrownose smooth-hound ("Mustelus schmitti"), another shark that is speckled with white spots. The speckled smooth-hound is ovoviviparous with eggs that develop within the female and hatch into juvenile fish which are about at birth. Litter sizes are typically seven. Along with the humpback smooth-hound ("Mustelus whitneyi") and the spotted houndshark ("Triakis maculata"), this fish is known to local fisheries as "tollo" and is caught
Hound trailing the popularity of the sport led to the establishment of the "Hound Trailing Association" in 1906, this was followed by the Border Hound Trailing Association in 1933 and later the Yorkshire Hound Trailing Association and associations in County Cork and County Kerry. Trail hounds have evolved into a distinct breed or type of hound specifically bred for performance alone, they are sleek, hard muscled hounds with almost whippet like bodies. Trail hounds descend from the Fell hounds, foxhounds found in the north of England. In his "Foxes, foxhounds and fox-hunting", Richard Clapham stated "fell hounds trace their origin back to