A pet nail trimmer includes a pair of handles, a housing, a guillotine assembly, and a light. The guillotine assembly extends from the housing and is actuated by the handles. The assembly includes a blade and a frame that are in parallel to one another and that define a cutting opening that includes a first end nearest the handles, a second end opposite the first end, and two sides. The light is disposed within and along a side of the cutting opening, adjacent the blade and the frame, and is oriented to direct light across the cutting opening from one side thereof toward the other. The light is directed in a direction that is generally perpendicular to the handles.
