Disclosed is a toilet system for dogs that can be used without filling an upper receptacle with particulate matter, and that can be easily cleaned. The toilet system (1) for dogs is provided with: an excrement containment receptacle (2) that has an excrement containment section (21) that can contain excrement and an upper receptacle (4) that has a liquid-permeable bottom surface section (41) and side wall section (42) that rises from the rim of the bottom surface section (41). The toilet system (1) for dogs is used with a liquid-permeable panel (3), which is liquid-absorbent, mounted on the top surface of the bottom surface section (41). The rise angle of the side wall section (42) from the bottom surface section (41) in the upper receptacle (4) is at least 90 degrees, and in the upper receptacle (4), the bottom surface section (41) and the side wall section (42) are formed integrally without seams.
