An animal cage run including an elongated enclosure formed by a plurality of joined walls defining an interior and presenting a first opening for accessing the interior. A plurality of doors that are mounted over the first opening are moveable between closed and open positions alternately limiting and allowing access to the interior. A plurality of dividers are each operable to removably engage at least one wall for dividing the interior into two adjacent compartments. Each of the dividers is removable from engagement with the walls by moving the divider in a generally horizontal direction.
