L & Butters: who cleans a bowl better?

It seemed like Butters has been a little picky about his food lately. He hasn't been eating as much or as quickly as he used to. Yesterday, I decided to give him something a little different. I mixed the rice and soup (that I made for L & me) with canned albacore. The soup has cauliflower, tomato sauce, chicken broth, peas, carrots, celery and onions. Butters ate it all up and cleaned up the bowl...unlike someone else who always leaves a pea or two and some grains of rice. Little thing that irks me. Is the last pea not good enough for you to eat? You have something against the last pieces of rice? I guess next time I'll let Butters do it.