Spot is a magnificent beast, but she can be prone to foul tempers, like sometimes during snack time. While the other 3 Chihuahuas constantly wonder if it's pancake-o-clock, Spot only eats her pancakes about half the time. The other half the time I give her a piece of pancake and she starts guarding it, growling at any dog that gets near her. So, I take it away, usually giving it to Smokey.
At that point, Spot usually gives me the icy glare of death, like she was cheated out of her snack. Sometimes I even have to crate her until the foul mood subsides. Sometimes I just go straight to putting peanut butter on hers, but she's been getting some junk in her trunk, so I've been dialing back her calories.