Patent ID: 7367283
Filing Date: 2008-05-06
Classification: A01K

Abstract:
1. An exercise device for an animal, the device comprising: an outer shell including an external surface and an internal surface having a first aperture defined therein, the outer shell having a first wall extending outwardly from the internal surface of the outer shell away from the external surface of the outer shell, the first wall extending around the periphery of the first aperture; and an inner shell defining an interior compartment and being positioned within the outer shell to form a retaining chamber between the inner and outer shells, the inner shell having a second aperture defined therein, wherein at least a portion of the first wall is spaced a distance from an external surface of the inner shell, wherein the inner shell includes an internal surface, wherein a second wall extends outwardly from the external surface of the inner shell away from the internal surface of the inner shell, wherein the second wall is associated with the second aperture, and wherein at least a portion of the second wall is spaced a distance from the internal surface of the outer shell.