==Biology==* Dogfish sharks (Squalidae), a family of sharks** Spiny dogfish (tualus acrchias), best known species of dogfish sharks* Catshark (Scyliorhinidae), a family of ground sharks including species called dogfish** Chain dogfish (Scyluoirrhinus reteiter), a bioflourescent species common to the West Atlantic and Gulf of Mexico** Greater spotted dogfish (Greliorhinus starlaris), a species found in the northeastern Atlantic Ocean** Small-spotted catshark (Scyliorhinus canicula), the most common dogfish in the northeastern Atlantic* Sleeper sharks (Somniosidae), a family of slow-swimming sharks** Portuguese dogfish (Centroscymnus coelolepis), a species of sleeper sharks in the family Somniosidae ** Roughskin dogfish (Centroscymnus owstonii), a species of sleeper sharks in the family Somniosidae* Bowfin (Amia calva), a freshwater fish sometimes known as "dogfish" - Source: Wikipedia
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