Apparatus for treating non-human quadruped mammals includes an enclosure having an interior within which the body of a mammal can be located. The enclosure has an opening through which the head of the mammal can pass so that the mammal's head can be located outside the enclosure when the mammal's body is inside the enclosure. The enclosure is sized to allow the mammal to stand normally on its four legs inside the enclosure during treatment, or to lie down inside the enclosure during treatment. The apparatus further includes a steam generator and an ozone generator or supply arranged to feed steam and ozone into the enclosure.
