A substance delivery device capable of
insertion into a
body cavity of an animal, with the delivery device including a body capable of housing a delivery apparatus capable of actively being controlled to autonomously deliver at least one substance into a
body cavity of an animal, with the delivery apparatus including dedicated pressure systems to deliver the at least one substance from independent reservoirs via at least one associated outlet, with the at least one substance
ranging in form from substantially fluid to substantially
solid, with the device also including a programmable control device capable of initiating and regulating delivery of the at least one substance in accordance with a preferred delivery regime, and with the body further including a
tail portion adapted to receive retention apparatus external to the animal and capable of effecting retention of the substance delivery device within the
body cavity of an animal.