A quadruped diaper with extended rear leg covers is disclosed. A diaper of the disclosure includes a textile body band designed to encircle the body of the quadruped, an outer liner extending from the textile body band that is substantially liquid impermeable, wherein the outer liner comprises an extended covering extending from the textile body band and comprising leg portions of sufficient length to cover at least a quarter of a length of each rear leg of the quadruped, an inner liner extending from the textile body band that is substantially liquid permeable, wherein the inner liner comprises an outer perimeter secured to the outer liner to enclose a cavity there between, and an absorbent core retained within the cavity and extending through the leg portions of the diaper.