A system and device for restraining an animal. A bracket and crossbar provide a means by which the system can be disposed on or over a door or window jamb. The crossbar provides a counter-force to a mount disposed on top of the door or window header, the crossbar having been disposed through the door or window and providing counter-pressure on the frame of the door or window. The system includes a suspension mechanism by which an animal can be suspended from the bracket. The suspension mechanism includes a means for adjusting the length, allowing the animal to be lifted off the ground or floor.