You should make it so it not only is directed at big breeders but small collectors as well. I've been using a notepad app on my droid powered phone to keep track of all my animals. It would be nice to have something that was setup for tracking my pets eating/shedding/pooping schedules.
^ I use google calendar for this
On a side note, using the camera to read barcodes is crazy, like really impressive. I'm not programmer, but I'd be seriously impressed if someone had the time and resources to code something like that.