Provided is a litter box for animals in which a suitable amount of excretion treating agent can be determined visually. A litter box for animals is provided with a granule accommodating container that accommodates a plurality of granules. The granule accommodating container is provided with: a container main body, which has a lower surface part and a side wall part standing up from the peripheral edge of the lower surface part; and a protruding part, which has a protruding part lower surface, which sticks out toward the outside from the side wall part on the container main body and is curved at a prescribed angle with respect to the side wall part, and a protruding part side wall. The lower end part of the protruding part lower surface is positioned above the upper end part of the lower surface part.
