PROBLEM TO BE SOLVED: To provide a pet toilet in which excrement does not easily adhere to a tray when the tray is pulled out. SOLUTION: A pet litter box 1 includes a main body container 2, a partition portion 3, and a tray 4 housed on a bottom upper surface 21 of the main body container 2 and can be taken in and out through a front opening 20. A protrusion 40 that projects toward the bottom upper surface 21 is provided on the bottom lower surface 41 of the tray 4 that faces the bottom upper surface 21 when the tray 4 is accommodated. On the virtual straight line VL extending through the protrusion 40 in the pull-out direction X1, the protrusion height non-constant region 45 in which the protrusion height from the bottom lower surface 41 is not constant extends from the front side 41F of the bottom lower surface 41 to the central portion 41M. It extends over the rear side 41R. The protrusion height non-constant region 45 has a portion in the front side portion 41F having a portion in which the protrusion height from the bottom surface 41 of the bottom portion is higher than that of the central portion 41M. [Selection diagram] Fig. 2【課題】トレーを引き出す際にトレーに排泄物が付着し難いペット用トイレを提供すること。【解決手段】ペット用トイレ１は、本体容器２と、仕切り部３と、本体容器２の底部上面２１上に収容され、前方開口部２０を介して出し入れ可能なトレー４とを備える。トレー４の収容時に底部上面２１と対向する、トレー４の底部下面４１に、底部上面２１に向かって突出する突起４０が設けられている。突起４０を通って引き出し方向Ｘ１に延びる仮想直線ＶＬ上に、底部下面４１からの突出高さが一定ではない突出高さ非一定領域４５が、底部下面４１の前側部４１Ｆから中央部４１Ｍを介して後側部４１Ｒにわたって延在している。突出高さ非一定領域４５は、前側部４１Ｆに、中央部４１Ｍよりも底部下面４１からの突出高さが高い部分を有する。【選択図】図２
