The purpose of the present invention is to obtain a cover member for pet toilet seats, whereby, even with a reduced overall height, pet urine deposited thereon flows easily down in the toilet seat direction. A base section (21) has on the upper surface thereof a sloped surface (26) that gradually slopes downwards from a first end (22) towards a second end (23). The sloped surface (26) has: a first sloped section (27) arranged on the first end (22) side of the base section (21)； and a second sloped section (28) that is positioned further on the second end (23) side than the first sloped section (27), slopes to an end edge (25) of the second end (23), and has a greater slope than the first sloped section (27). An end edge section (31) has a sloped surface (32) on the upper surface side thereof that gradually slopes downwards as same becomes further removed from the first end (22) of the base section (21).
