Abstract: A pet litter box includes an elongated housing having a first end wall and a second end wall. The housing further includes a sidewall extending between the first end wall and the second end wall. The litter box also includes a base supporting the housing for rotation about a longitudinal axis. The first end wall of the housing includes a first end wall aperture shaped and dimensioned for the passage of a pet therethrough, the first end wall aperture being offset from a central longitudinal axis of the housing. The housing further includes a grate and a dividing panel respectively extending between the first end wall and the second end wall of the housing. The grate includes a first edge which remains in contact with an interior surface of the sidewall to define a grate/sidewall junction and the dividing panel similarly includes a first edge which remains in contact with the interior surface of the housing to define a panel/sidewall junction.