A litter box comprises a body made of at least one flexible elastomeric material, the body having a wall defining a cavity with a top open end. The wall has four generally upstanding wall portions contouring the cavity. A first wall portion has a first minimum height of 8.0 inches or less, a second wall portion having a second minimum height of 10.0 inches or more and being opposite the first wall portion. Third and fourth wall portions are higher than the first minimum height and the second minimum height, the third and fourth wall portions being on opposite sides of one another and being located between the first wall portion and the second wall portion.
