An animal mattress for bedding an animal comprising an outer casing of a mesh material woven from individual polyester strands coated with a polyvinyl chloride material impervious to liquid and heat; the casing includes a hollow interior chamber and a zipper opening on a side thereof to allow access...http://www.google.com/patents/US5002014?utm_source=gb-gplus-sharePatent US5002014 - Animal mattress
