The common smooth-hound has a grey-brown back and is white on its underneath.

It is often confused with the starry smooth-hound which has white spots on its back.

The slender smooth-hound has a very thin body and a broad, highly flattened head.

Due to the similarities between the common smooth-hound and other sharks, misidentification occurred for a long time.

The slender smooth-hound is likely a schooling species.

The dusky smooth-hound is often used as a laboratory animal and in public display at aquariums.

The starry smooth-hound can often have faded spots which leads to misidentification.

Mating occurs throughout most of the dusky smooth-hound's range from May through July.

Small fish that are preyed upon by the dusky smooth-hound include menhaden and tautog.

In certain areas, the flesh of dusky smooth-hound is marketed as fresh or dried salted for human consumption.

The diet of the slender smooth-hound is diverse, but dominated by small, benthic bony fishes and decapod crustaceans.

Whitespotted smooth-hound, a houndshark, family Triakidae, found in subtropical southeast Atlantic up to a length of 1.2 m.

The slender smooth-hound or gollumshark (Gollum attenuatus) is a species of ground shark in the family Pseudotriakidae.

Mustelus ravidus (Australian grey smooth-hound)

Harmless to humans and of no economic value, the slender smooth-hound is occasionally caught incidentally in bottom trawls and on bottom longlines.

Mustelus asterias (Starry smooth-hound)

Mustelus californicus (Grey smooth-hound)

Mustelus canis (Dusky smooth-hound)

Mustelus dorsalis (Sharptooth smooth-hound)

Mustelus fasciatus (Striped smooth-hound)

Mustelus griseus (Spotless smooth-hound)

Mustelus henlei (Brown smooth-hound)

Mustelus higmani (Smalleye smooth-hound)

Mustelus lenticulatus (Spotted estuary smooth-hound)

Mustelus lunulatus (Sicklefin smooth-hound)

In some classifications, the family is split into two sub-families, with Mustelus, Scylliogaleus, and Triakis in sub-family Triakinae, and the remaining genera in sub-family Galeorhininae.

Scottish zoologist Andrew Smith originally described the sharptooth houndshark as a species of Mustelus in 1839, as part of his work Illustrations of the Zoology of South Africa.

Although in South Africa the sharptooth houndshark is listed as a noncommercial species and thus cannot be harvested commercially, it is often mistaken for the common smooth-hound (Mustelus mustelus) by fishers.

"Smooth hound," for example, was one restaurateur's stab at wild pigeon.

Like other smooth hounds, the common smooth hound will aggregate in large numbers, like a pack of dogs.

"Dreamt U in a Dream" (as Starry Smooth Hound)

Another shark it is often confused with is the tope shark although the common smooth hound has a larger second dorsal fin.

Alderney Breakwater Location of 3 Baliwick Records (Starry Smooth Hound, Three Bearded Rockling, Marbled Electric Ray)

Through a huge window, visitors can see conger eels, mullet, pollack, bream, and smooth hound sharks swimming in the open water, flatfish and rays hiding on the seabed, and lobsters and crabs hiding in the rocks.

He first came to musical prominence in 1998 as a 4AD signing under the moniker Starry Smooth Hound, releasing a track co-produced by Guy Fixsen (of Too Pure band Laika) on the label sampler Anakin.

Guernsey St Peter Port Breakwater - (Location of 8 Bailiwick Records (Angler Fish, Couchs Sea Bream, Lesser Spotted Dogfish, Flounder, Smooth Hound, Tadpole Fish, Whiting and Ballan Wrasse)).

It is a common pastime in coastal areas of Scotland, England, Wales and Ireland and often results in the capture of large specimens of many species of fish, including: flatfish, bass, cod, whiting, pollack, black bream, dogfish, smooth hound, bull huss, rays and tope.