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When asked what they are, the Warners will never give a clear response, with their main answer simply being that they are the Warner brothers and the Warner sister some other responses include "cute" and "infested with fleas." The Warner siblings' species is never specified, much to the confusion of the other characters. His nose is slightly triangular, and he has grown a small tuft of hair-like fur/fur-like hair on the top of his head similar to Pinky. His slacks are less baggy and were given a more saturated color. Yakko's teeth, like the other Warners, now has noticeable fangs. In the reboot, his face and feet are a warmer color, with his feet now having one spot instead of two. He is an anthropomorphic toon of indeterminable species.
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The pants are held up by a large black belt with a golden square buckle. He wears a pair of smoky topaz slack pants that go up to his waist. Yakko has primarily black fur with a red nose and white face and feet.
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