I don't have pigs but the goats are having problems with all this mud. Yesterday I had to call the vet out as 2 of them were having great difficulty with walking. I had checked their feet but could see nothing so called in the expert. The vet started with Blossom, one of the Pygmy's and could find nothing with her feet either. He gave her a thorough check and could find nothing but he could see she was not happy at walking. Eventually, with luck, he found she had the smallest of small stones in her foot which had ulcerated, hence the problem with walking. It was cleaned out and treated so when it came time to check Gizmo the same problem was found. So, we HATE all this mud!