This article was originally published on Critter Science.

The catshark is the largest family of sharks with around 160 species in 17 genera. Just to confuse you further, catsharks are also known as dogfish. The main difference being that catsharks are oviparous (lay eggs) while dogfish are viviparous (birth live young). Most catsharks are listed as Least Concern […]

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This article was originally published on Critter Science.

The spiny dogfish, aka piked dogfish, spiky dog, or rock salmon, is among the most prevalent shark species in the world. They get their name due to the fact that they have the habit of chasing down smaller fish while in packs, like dogs would. They also possess 2 sharp […]

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