Tattooing horses' eyelids can prevent cancer: "Tattooing a horses eye helps protect them from cancer."
Here's a link to a video and story that some of us with Paints might find useful. My horse, Cowboy, could use it.
I always thought tattooing the eyelid was a cosmetic thing, apparently, it's also a medical one. I use a fly mask for him, but how many times have I gone out there and found he's pulled it off?
Has anyone done this?