This litter box comprises: an upper container having a plurality of holes formed in the bottom thereof, the holes extending vertically through the bottom； a lower container which is provided with a receptacle for receiving excreta passing through the plurality of holes and is not affected by the weight of the upper container； and an output unit for outputting a signal which varies with the amount of the excreta received by the receptacle.為了提供一種可計測排泄物的量之動物用廁所。一種動物用廁所，係具有：在底部形成有貫穿上下方向的複數個孔之上容器、具備接收部且不受前述上容器之重力的作用之下容器、以及輸出對應於前述接收部所接收之前述排泄物量多寡而改變的訊號之輸出部，前述接收部是用於接收通過前述複數個孔後的排泄物。
