Do a google on “Seedy Toe”. My vet book describes the a condition closer to what Bay has.
Hmmm... well, I’m not sure he actually used the word thrush, he just said things more like “bacteria have got up there “ and “thrush remedies like Koppertox or something would be good... though the stuff he put on was something else... some kind of Magic something or other.
I wish I’d have taken a picture before he put the medicine on, because it didn’t look that black. The medicine made it look like that. More like the dull dark you see at the edges. And now I can’t see it with the shoe on.