Yeah if you look at the words on the screen it should say something like: the fence is too full! It is to limit the amount of sheep in 1 fence (only 4 sheep at a time is allowed), and also add a little humor + little out of control element. I know it is a bit confusing because there is no visual cue on the fence, but I just don't have the time to add that during the 48 hours. Anyway, thank you for playing!!!