"Dogfish" is a common name for several species of small sharks,

"Dogfish" is a common name for several species of small sharks, primarily from the Squalidae family. These sharks are found in oceans worldwide and are known for their slender bodies, sharp teeth, and spiny dorsal fins. Key Characteristics of Dogfish Sharks Size: Typically range from 1 to 4 feet (30 cm to 1.2 m) in length. Body: Slender, elongated bodies with gray or brown coloration and sometimes white spots. Fins: Possess two dorsal fins, often with spines for defense. Teeth: Small but sharp, triangular teeth, allowing them to grasp slippery prey. Diet: Carnivorous, feeding on fish, squid, crustaceans, and mollusks. Habitat: Found in temperate and cold waters, typically near the seafloor. Reproduction: Unlike most fish, dogfish sharks give birth to live young (viviparous or ovoviviparous, depending on species). Notable Dogfish Species 1. Spiny Dogfish (Squalus acanthias) – One of the most common species, known for its venomous dorsal fin spines. 2. Smooth Dogfish (Mustelus canis) – A species with blunter teeth, feeding mainly on crustaceans. 3. Greenland Shark (Somniosus microcephalus) – Sometimes referred to as a dogfish, this slow-moving deep-sea shark can live for hundreds of years. Interesting Facts Longevity: Some species, like the Spiny Dogfish, can live over 100 years. Fisheries: Used in commercial fisheries for food (sold as "rock salmon"), fish oil, and leather. Defense: Some species curl into a ball when threatened, using their spines as protection.