Not sure what I'm dealing with here. Will of course be soaking and cleaning them off, but the bumps of callus are visible. His legs (hocks mostly?) don't match, the following pictures are the best I could get for now. Lame on left (darker) foot. Doesn't appear to be bumble I don't think, will know when soaked. They don't have a pool at the moment in large part due to weather, so lack of moisture may be a contributing factor. Otherwise I've got no idea what this is. Almost reminds me of something fungal.


