Disclosed is a disposable liquid-permeable panel that is for a toilet system for animals that, without using a particulate, resists foot wetting when the animal performs excretion and can suppress the incidence of odors even if excrement is present for a long period of time. The liquid-permeable panel (3) used in the toilet system (1) for animals is water-absorbent, liquid-permeable, and disposable, and is configured from paper containing aluminum sulfate. Preferably, the paper is acidic paper containing a sizing agent and aluminum sulfate. More preferably, the liquid-permeable panel (3) has a plurality of holes (31) that penetrate in the direction of thickness and is a corrugated cardboard wherein liquids go through the plurality of holes (31), passing through in the direction of thickness of the liquid-permeable panel. Excrement odor suppression is achieved by means of the chemical deodorizing ability that aluminum sulfate has.
