Here's Bunny the Dog (a Boston terrier/Pug mix) as Mary Todd Lincoln (a shopaholic who threw potatoes at her husband).

Costume by Jake Nelson, and anyone tempted to allege animal cruelty should note that Bunny can't be anywhere near as uncomfortable as Jake, who's wedged under the skirt to power Bunny Mary Todd on and off the Bumbershoot stage. They were both rewarded with treats. (Also, seriously, if you put in the time to train your dog well enough that it's able to sit still on a hoop-skirt platform, you deserve to do just that at least once.)