Abstract: An animal cage that holds the cage floor and waste collection assembly in place without the use of mechanical fasteners so that the assembly may be removed for cleaning and replaced by another assembly in minimal time. Also provided is the floor and waste collection assembly that is held in place without the use of mechanical fasteners and is removable for cleaning and replacement by another assembly in minimal time. A quick change electrical connection to provide shock current to the floor of the assembly is accomplished by creating pressure contact between conductive floor bars and electrical contacts of a circuit board in the rear support block of the cage.