Pound (film)
Pound is a 1970 film directed and written by Robert Downey, Sr., it was based on The Comeuppance, an OffOff Broadway play written by Downey in 1961. It is about several dogs, along with a Siamese cat and a penguin, at a pound, as they await being put to sleepvague the animals are played by human actors. It was the film debut of Robert Downey, Jr., the directors 5yearold son, as a puppy.
Source: Wikipedia
