Beverly D. I’m wondering if you know whether they gave her a different food. I’m assuming that when you board your dogs you brought enough food for them. Also, do you bring them water also or are they drinking the facilities water. Maybe their water system needs to be checked. Too much chlorine or fluoride in the water if it’s city water. If well, maybe too many minerals. One of my dogs is a Maltese and a couple of years ago when I boarded her she came back with reddish tear stains, reddish feet and a reddish beard. I had to conclude that it was something she ate or drank. Also stained reddish were the hairs all around her vulva. Also a big one, have any of the employees been handing out treats (which is very sweet and I know they all mean well and like to do that so the dogs don’t fear them). You may be feeding grain free and the facilities treats may cheaper treats that contain grains. Or something in the treats your dog had an issue with. I find that it’s typically something like that.
