An area for accommodating a domestic animal, which is arranged to receive the excretions thereof and which includes an animal discharge-pipe leading into a human discharge-pipe placed between an area for accommodating humans, which is arranged to receive the excretions of the latter, and a sewage-discharge pipeline, the area for accommodating a domestic animal further including a rotatable sealing device having a first position for enabling the animal excretions to be received, and a second position for enabling the animal excretions to be discharged.
