While I navigate the isle of the grocery store, trying to keep the dog and cart headed in the same direction, and not because of the dog, but the wobbly wheel on the cart that is making a kerplunk sound that would annoy the dead, I have the misfortune of being barked at by the chihuahua in the cute plaid coat with matching bow on the cue ball sized head of a designer dog. Now my dog simply glances at the barking ball of fur and gives me a look that screams to me that she know