Abstract: The carrier cage of the invention is dual compartmented, with an open-walled living compartment at one end and a closed-walled sanitation compartment at the opposite end divided by a position having a passageway therethrough for arrival movement between the two compartments. The sanitation compartment is provided with a removable litter box preferably located under an apertured floor with provision for moving the litter box as a drawer. Space under the floor of the living compartment may be used to store grooming and other useful articles.