Dog Ramp Pet Ramp Adjustable Heights PortableMake it easy for your dogs and other pets to travel with you with this portable, adjustable pet ramp from Randy & Travis Machinery. Whether you use it indoors so your pet can crawl into bed with you or help your pup get into your car, this ramp is a must for pet owners. For senior pets, a ramp is easier on the joints than pet stairs since it's a steady incline. Its adjustable height allows you to use it with a wide variety of vehicles or other uses.