My sheep aren't fond of being touched, they practically don't allow it. I get to rub their heads for maybe 5 seconds before they are done being touched. I only get to hug them when they're eating, and even then I'm forced to be cautious about it. Does anyone have any tips to make them huggable, or even petable? They come to me, but not for pets or rubs. What to do, what to do....