Great Pyrenees Rooting?

One of our dogs seems so intent on catching rodents and burrowing critters that she has a persistent wound on her snout that simply won't heal. I don't know if she thinks she's one of the pigs, or what! We try of course to keep it free from infection with Blu-Kote and such, but this has been going on for many months and I'm not sure what to do about it. Stifling the behavior seems unreasonable, and bandages surely won't last more than a minute or two. I've considered the cone of shame, but I'm wondering if this is common behavior for GPs, or if anyone in the Permiesphere has experience in curbing it or dealing with the repercussions.

Thanks in advance for any advice, we really appreciate it.

I cannot advise with how to deter your dog from digging but for surface wounds on my dog, a liberal coating of comfrey salve helps with the healing. It is made with on part beeswax to four parts evo infused with dried comfrey leaves.

For a quick salve, gently heat the shredded leaves in evo. I prefer to steep the leaves for six weeks, but your dog’s nose needs prompt attention. If you don’t have any beeswax, the infused comfrey oil applied directly ought to help.

It looks painful, I hope that someone can help you with deterrent methods.