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Poochyena is quadruped Pokémon that has a gray body with a black face and throat, feet, and belly. Its eyes have yellow sclera and red irises, and its nose is also red. Its lower jaw has two fangs sticking out. The fur at the base of its tail is rumpled and shaggy. Poochyena has gray paw pads on its three-toed paws.
Poochyena has a very keen sense of smell, allowing it to find and chase its prey with ease. It takes a bite at anything that moves, and makes the hair on its tail bristle out to try to intimidate its foes. Known for its tenacious nature, it chases after prey until the victim becomes exhausted. If its prey strikes back, it may turn tail. It is omnivorous that will eat anything. This Pokémon lives in grasslands and forests.