I watched a short claymation film some time ago and I can't for the life of me remember the name of it, nor can I seem to find it based on what I can remember... It was a dystopian future, humanity had all but died out. A team of scientists/researchers (i guess) sent one human underground, to find what appeared to be a 4 legged creature with a penis, which was important, because natural reproduction was pretty much non-existent. On the way down, his vessel was shot down by renegade cyborg type things. When he crashed, he was found by some more pleasant cyborg types, who recognized him as being an ACTUAL HUMAN BEING (a thing of myth and legend at this point) and called him a "god." They rebuilt him, but he had lost his memory. He goes wandering, sees some of the fucked up shit in the underground world, which is more like underground buildings, theres these vein-ey holes in the wall that if you touch them these crazy worm things comes out. One gets our guy, then spits him out, and in the confusion, he regains his memory, but loses the ability to communicate with the creatures that saved him. He's chasing after this 4-legged penis-having creature (that his rescuers call "rex" or "rover" or some dog name like that) and he can't express to them what his mission and reason for descending into their world was.. I think in the end he dies...