Currently dealing with a bit of scare at our place as well. I mentioned last week that our outside cat was hit on the roadside. He thought himself a golden retriever and lived with our dog outside (slept together, ate together, played together, it was the darndest thing I ever saw). Our Golden is 10, so once her outside companion left us the LW decided she was going to live the rest of her days out as an inside dog. She's trained well, so that's not a problem, but after a little more than a week inside we noticed some blood in her urine that she was bring back in with her hind end hair. So we had a vet appointment this morning. I of course, being the pessimist, just assume that our 10 year old golden is riddled with cancer and the end is nigh. Initially it doesn't look that way, vet suspects a UTI and is treating as such at this point. If it doesn't improve by the weekend we need to start looking at other things. I've buried one pet this month, don't care to bury another so soon.
I've gone mad scientist again this morning before work and am curious to see how this works. I shared my nesting box turned feeder, I've been trying to think of a way to do the same with a waterer at least for the winter. What I've settled on is a square, gallon, ice cream tub with a low-pressure chicken watering cup installed in the side. A couple rubber washer on either side and it doesn't seem to want to leak. I currently have it sitting on a block poking through the 2x4 wire on the fence run to get them using it and to make sure that it doesn't leak in the short term. May end up not using it if I don't heat the coop and just go the dog dish method in the run, but I like options.