After a day of rain I noticed my horse who lives outdoors had a whitish, blue ring around the top of her hoof. It isn't sensative but feels kind of soft. I read somewhere that it is her periople, what can I do to get rid of it?
Get rid of it?! The horse needs it's periople. That's just what happens when they get sodden. All the horses down here look like that after standing around in knee deep snow in the winters. Just leave it, as it dries it'll go away on its own.