A domestic white duck named Buttercup can finally walk like a normal duck, thanks to a new prosthetic foot. Born in a high school biology lab with a backward left leg, Buttercup was given to Mike Garey of Feathered Angels who realized the duck couldn't survive with his deformity. Using a 3-D printer, Garey created a mold for Buttercup's prosthetic and eventually fashioned the artificial webbed foot itself.

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