Abstract: A sturdy, portable, relatively light weight ramp is provided for assisting an animal in inclined walking between two different levels. The ramp comprises two relatively narrow alignable ramp sections which are centrally hinged and designed to cause their edges adjacent the hinging to firmly abut and be interlocked. The ramp is transportable in a compact first condition in which it is folded at the hinge with the undersides of the two sections in a parallel, back-to-back folded state. When used to support an animal, it is unfolded and the two hinged sections are aligned and firmly locked in an aligned second animal-supporting condition. The hinge and locking interconnection are relatively closely toleranced so as to provide a stable linearly-extending ramp capable of supporting heavy large as well as light small pets.