A modular, multi-level pet housing that comprises a plurality of multi-sided
boxes.
A top and bottom is provided for each box. A plurality of tubular columns of a
first length generally less than the height of the side walls and a plurality of
tubular columns of a second length generally longer than the height of the side
walls are provided. The tubular columns may be joined to each other by a coupling
member. The top and bottom of each box is formed with a hole adjacent each corner
that is sized to selectively permit one of the tubular members to fit therethrough,
but to prevent an associated sleeve member from fitting therethrough.
