An animal toilet 1 having a front-rear direction, a right-left direction and a height direction including: a urine passing part 21 that is provided with a plurality of holes 210 through which urine passes and on which an excrement treatment material is to be placed； an absorbent body setting part 31 that is provided below the urine passing part 21 and on which an absorbent body is to be placed； an opening part 41 that is provided above the urine passing part 21 and allows an animal to come in and out； and side walls 4a provided on both right and left sides of the opening part 41, a maximum height H1 of the side wall 4a in a forward area 11 that is located forward of a center position C in the front-rear direction being smaller than a minimum height h2 of the side wall 4a in a rearward area 12 that is located rearward of the center position C, a maximum opening width W1 of the opening part 41 in the forward area 11 being larger than a maximum opening width W2 of the opening part 41 in the rearward area 12.
