Abstract: A bathing tub for pets includes a basin with lateral wings projecting from opposite sides. The wings are useful as handles and work surfaces, and engage the rim of a sink into which the tub is placed to prevent the tub from tipping. One or more interchangeable elements can be snapped into the center of the basin to construct a mound assembly in the center of the basin of the proper height for a particular animal; the mound height can be changed, by adding or removing elements, for other animals. While being bathed, the pet stands in the basin with its feet straddling the mound; this prevents the pet from sitting or lying down in the tub. Restraining straps may be applied through slots in the tub to keep the animal in a correct position.