Fantastic Beasts XIII Picture

Both present in Greek mythology, Gorgons and Ketosis are frightening looking creatures and dangerous for any living being:

* Gorgons are the famous snake-haired women that turn men to stone with her ​​fatal gaze. They are very agile and elusive creatures, and excellent archers. They usually live in caves or swamps, as well as abandoned temples.

* Ketosis are described as huge snakes with resilient scales and a scarlet crest. But not quite. These sea monsters are in fact giant crustaceans, with huge claws and up to five pairs of legs, not counting the tentacles that possess usually on the back. Its body is covered with a very tough armor, and its powerful jaws hold up to eight rows of sharp teeth.
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