I came out to the field tonight and when I started to clean the hoofs I found Jemma's back foot frog is cut really badly: the whole left part is missing and it's cut through in 2 places really deep. So I called my farrier but he didn't answer (it's pretty late too, may be he's sleeping already). So I cleaned it, put the tape on top and put them both in stalls. Will try to get hold of my farrier again tomorrow morning. But how serious is that and what should I do? I tried to do some research on internet, but couldn't find anything...