Make a waterfall pool for your pet to splash and soak or get a refreshing drink! Cut a polystyrene sheet to the size available for your waterfall, cut out a shape for the platform with identical pieces to stack in layers for the raised platform. Cut pieces for the border wall of each pool and the cubby to hide the water pump, assemble the pieces with glue, cut out a piece of the base board and raise it for a hide. Cover the structure with expanding foam, cover the foam with grout, paint the structure and cover it with a sealant. Insert the water pump in the cubby and make a lid for the water pump area and decorate the structure with pet-friendly plants or natural stones.