More additions?
I have to admit I was a little turned off by the fact I couldn't starve my Blop... but I guess I'm just a jerk.
Other than that I thought it was kind of fancy. I was happy to see that he grows based off the amount I feed him AND could feed him bears.
Have you considered storing food items and such in arrays? I thought it would be kind of cool if you could drop food, but if he wasn't hungry (or if he was sick) he wouldn't eat it... He might waddle over to it if he's hungry and eat it, but if it's been there too long it might make him ill... Just a thought.
Also; I saw the save/load option... I dunno if that saves sessions or anything like that, but have you considered using "Mochi Social" or some other social library? Being able to post stats, save state and invite friends on facebook and stuff might open up your audience later on.
I noticed a few glitches, but they were all just animation based so a quick adjustment to the play/stop commands in the code should fix that up pretty nicely.
Hopefully this is helpful, good work.