Ok, so I didn't know to use YANK when the horse I caught was not behaving. I tried catching another one, but could not of course, because I already had one. So, I killed that one, which was buggy cause I could not attack it while it was prone, and then could not search it...but it went away eventually.
However, I still could not try to catch another...said I still owned one. I assisted, was told to check the stables. They retrieved the horse I had killed...but it was alive again, heh. So, everything is ok now, but I was told to post and to bug it.
-Taljin