Preheat oven to 300 degrees. In a medium bowl, use a fork to combine the butter, sugar, and flours until a fine crumb forms. Add just enough water to make the dough stick together. Be careful! You don't want it sticky, but just able to be rolled and cut without crumbling excessively.
Sprinkle a bit of white flour on a large, wooden cutting board. Place half of the dough on the cutting board and roll it out until it's about 1/4-inch thick. Cut into animal shapes using cookie cutters. Transfer to a parchment lined baking sheet and bake in preheated oven for 20-24 minutes, or until golden brown. (Over cook them ever so slightly beyond where you usually bake cookies for a nice, crisp cookie). Remove and allow to cool slightly.
During the last 4-5 minutes of bake time, toss the chocolate chips and/or candy melts in two medium, microwave-safe containers. Melt in the microwave. Once the cookies are removed from the oven, wait until they are warm to the touch, then dip them completely in the melted chocolate. Dipping the cookies while still a little warm will help you get a nice, light coat of chocolate on the cookies, without it being too thick & overpowering.
Transfer the cookies to a wire cooling rack and allow them to cool & harden completely before serving.