Try looking at the Foster and Smith website. I get their catalogues and I think they may have a water bowl that is cannot to tipped over. I just found it in the catalogue. There are three sizes: 12 oz, 24 oz, and 52 oz. Each has a different item number( VD-7256, VD-946, VD-947).
Here is the website: DrsFosterSmith.com 1-800-826-7206
GOOD LUCK!!