A system, of the present invention, for restraining a mouse includes: at least one home cage (10); a passage (20) through which the mouse (60) moves, the passage (20) having at least one first open end (21a); and a restraining device (50) which restrains the mouse by physically fixing the mouse (60), the at least one first open end of the passage (21a) being connected to the at least one home cage (10), the restraining device (50) being provided at a location on the passage (20) which location is different from the at least one first open end (21a) of the passage (20).

A system is described that includes a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region. The system comprises a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector. The system comprises the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.

A system is described that includes a transmitter for generating a magnetic field comprising a first detection region and a second detection region, wherein the first detection region is different than the second detection region. The system comprises a receiver configured to detect at a location of the receiver in the magnetic field a magnetic field vector, a polarity, and at least one additional vector. The system comprises the receiver configured to use the magnetic field vector, the polarity, and the at least one additional vector to determine a position of the receiver in the magnetic field.

A supporting device having a curved support surface elevated above a base and angled with respect to the base, such as for the support of an animal. The support surface may be elevated above the base by an adjustable stanchion so that it can accommodate animals of different sizes. The angled support surface may be fixedly or pivotally attached to the stanchion so that it may accommodate the sloped abdomen of the animal. The support surface may be designed to have a small sagitta so that it provides unobstructed access to the sides of the animal being supported. The base may be designed and configured to have a dog-bone shaped outline. Other embodiments are described and shown.

A supporting device having a curved support surface elevated above a base and angled with respect to the base, such as for the support of an animal. The support surface may be elevated above the base by an adjustable stanchion so that it can accommodate animals of different sizes. The angled support surface may be fixedly or pivotally attached to the stanchion so that it may accommodate the sloped abdomen of the animal. The support surface may be designed to have a small sagitta so that it provides unobstructed access to the sides of the animal being supported. The base may be designed and configured to have a dog-bone shaped outline. Other embodiments are described and shown.

A leash for training canines to walk beside a handler. The leash includes a single webbing strap that is folded over to provide a hand loop. The hand loop and/or strap length may be sized via a cord lock. Each of the ends of the webbing strap are folded and affixed into leg loops. The leg loops may be variably sized, and placed over the animal's hock. The leash is mounted to the animal via a slidably engaging bolt snap to a collar or harness.

A leash for training canines to walk beside a handler. The leash includes a single webbing strap that is folded over to provide a hand loop. The hand loop and/or strap length may be sized via a cord lock. Each of the ends of the webbing strap are folded and affixed into leg loops. The leg loops may be variably sized, and placed over the animal's hock. The leash is mounted to the animal via a slidably engaging bolt snap to a collar or harness.

An apparatus for securing the legs of livestock animals includes a frame also which defines an entrance and an exit and which presents sidewalls which extend between the entrance and the exit thereby presenting a chute suitable for the ingress and egress of a livestock animal. Near the floor of the chute and between the entrance and the exit are leg bars which are able to move between a retracted position suitable for allowing the lower legs of a livestock animal to move freely between the leg bars and the sidewalls and an extended position in which the leg bars are closer to the sidewalls so that the lower legs of a livestock animal are held securely between the leg bars and sidewalls. The apparatus can be used to secure the lower legs of a livestock animal and thereby immobilize the animal.

An apparatus for securing the legs of livestock animals includes a frame also which defines an entrance and an exit and which presents sidewalls which extend between the entrance and the exit thereby presenting a chute suitable for the ingress and egress of a livestock animal. Near the floor of the chute and between the entrance and the exit are leg bars which are able to move between a retracted position suitable for allowing the lower legs of a livestock animal to move freely between the leg bars and the sidewalls and an extended position in which the leg bars are closer to the sidewalls so that the lower legs of a livestock animal are held securely between the leg bars and sidewalls. The apparatus can be used to secure the lower legs of a livestock animal and thereby immobilize the animal.

Disclosed are an arced plate, a first fastener, and a second fastener. The arced plate can define a first arced aperture array and a second arced aperture array. When the arced plate, the first fastener, and the second fastener are used in combination, the fasteners can retain the arced plate as a truncated cone. Each fastener can include inserts configured to extend through, and thereby occupy minor apertures formed in the arced plate.