The best part about this puppet is that it moos when you press a button inside the mouth. Or the worst part, depending on how many times you accidentally hit the button.
I'm not sure my joke is actually conveyed here, but I find this picture amusing nevertheless. The original idea I had was that I was out of milk and had just asked the cow for some - apparently uncivilized behavior. I think, instead, that this picture just depicts a sense of general outrage on the part of the cow watching me drink her milk.
Great... now this makes me want to reuse this puppet with me eating a burger.