I treat my pet very well
so... clocks are out... sticks are out... is begging the new trend now?
If you care so much do something that will make people remember it. Showing 20 dog corpses stacked on top of each other doesn't inspire sympathy.
do you eat hamburgers? ever seen how a cow was killed in an industrial farm?
do you eat chicken? ever seen how a chicken was raised in an industrial farm?
Though I agree with you that animals should be treated fairly, raised comfortably (regardless of the end purpose) and killed quickly and painlessly, your movie does nothing to bring attention to their suffering... just makes people think "god what a crappy flash!"
If you care then devote some time to the issue and focus a little less on begging. A good animation would spread the awareness a lot further than a few pity-leeching pictures.
Though I love Cash's version of Hurt (far more than Reznor's) it was a completely inappropriate song for this. Hurt is about masochism and internal confusion... not quite what these animals are going through.