Meh, it won't go anywhere. The pet industry employees too many people and generates too much money for the government to have something like this thing pass. With the economy the way it is, nobody in their right mind would let this pass. They would basically be putting thousands of people out of jobs.
Your assuming dems are in their right minds to begin with. I'm not trying to start a political debate here, but you see the D's by all the people who have introduced this. Dems probably know this, all they are interested in, as of late, is power. This is another attempt at a power grab. Not to mention, pandering to a radical fringe left.