Dogs on concrete

Yes. Mine have been in kennels on concrete with bad drainage for 1 year now and it’s been the worst year I’ve ever had for conditioning and skin/coat health. Friggin hate this setup.

I am an eternal cheapskate and skimped on a good roof over the kennel, I figured their barrels kept them out of the worst of it so I went with a tarp roof for a while, then used a bunch of other subpar BS until I’ve finally realized that I’ve spent as much on cheap crap as I would have on new tin to begin with.

Also did tons of drainage work, installed a composting septic for them etc, but it’s all for nothing because the slab their on is lower than the surrounding property so no matter how I try it eventually collects the runoff water.

Long story short, your issue is likely jungle rot, rain rot, trench foot, athletes foot, jock itch, etc. it’s fungus caused by gradeux absorption in porous concrete and subsequent contact with your dogs. The reason light colored dogs are showing it is the same reason white faced cattle get cancer eye and pale skinned honkeys like me bake. Sunlight sensitivity. High heat and direct sunlight stress the dogs, their lowered immune system allows fungal inflammation to set in.