Quote Originally Posted by Darkbird View Post
What I've found is that any container must have straight sides or should have side expanding outward from the top so they are wider at the base. And the wider and shallower the better. I also quit filling more than about half full.
Target has plastic dog bowls for about $3 that are a good bit wider at the top than the base. The way they're designed you can also cut a hole in the side so it does double-duty as a hide. I've got BP's up to 1200 grams that stuff themselves under these bowls, and without spilling a drop of water.