Pacu - Common name for several species of South American freshwater fish that are related to the piranha.
Pica - Disorder characterized by the craving for and persistent eating of items considered to be non-food,
i.e. chalk, rocks, paint, gravel
Puca - Mythical creature typically represented as a black horse but also considered to be a shape shifter; so in this case, it is represented otherwise. (I felt like 'amorphous' captured the essence of a puca better . . . . . . . Also, I can't draw horses.) Pucas are typically considered to be benevolent spirits. However, when I first heard of a puca (or pooka) I was told that it's a creature that eats children -- so I went with that spin, accurate Celtic mythology be damned. (I don't really damn Celtic mythology, it seems pretty neat.)
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