Host zone of a pet (1) that, established to receive its depositions, includes an evacuation line for animals (3) that leads to an evacuation line for people (4) located between a host zone of a person (6) , established to receive the depositions of the latter, and a sewage drainage channel (5), said host zone (1) of a pet also comprising a rotating shutter device (22) having a first position, which allows the reception of said depositions of the animal, and a second position, which allows the evacuation of said depositions of the animal, characterized by the fact that said rotating shutter device (22) is a cylinder provided with a horizontal central axis parallel to a horizontal plane, said cylinder having at least two diametrically opposed cavities along the entire length of said cylinder in a trigonometric reference whose axes they are superimposed on the medians of the section of said cylinder taken in the center, said at least two cavities being established to be filled with sand and / or depositions of the animal, and by the fact that said evacuation conduit for animals (3) a water supply line (14) is connected.Zona hospedante de un animal doméstico (1) que, establecida para receptar sus deposiciones, comprende una conducción de evacuación para animales (3) que desemboca en una conducción de evacuación para personas (4) ubicada entre una zona hospedante de una persona (6), establecida para receptar las deposiciones de esta última, y una canalización de evacuación de aguas negras (5), comprendiendo además dicha zona hospedante (1) de un animal doméstico un dispositivo giratorio obturador (22) que presenta una primera posición, que permite la recepción de dichas deposiciones del animal, y una segunda posición, que permite la evacuación de dichas deposiciones del animal, caracterizada por el hecho de que dicho dispositivo giratorio obturador (22) es un cilindro dotado de un eje central horizontal paralelo a un plano horizontal, presentando dicho cilindro al menos
