at first i thought how awful, and this film does not condemn this kind of cruelty, but upon reflection i kind of like how you presented the events at the end, you're just saying "yeh, this happens." but mostly i'm just depressed now thinking about the dogs now.
also i like the music.
minor quibble: surely people doing this kind of thing wouldn't buy them from the pet store. you can get dogs cheaper than that.