We brought home our two 15 wk old nigerians yesterday. Today the wether jumped the gate to follow us! This your typical livestock gate so 4-4 1/2 ft. What the heck do we do to keep him from doing that? For now, he and his sister are shut up in their barn stall. My worry now is he will jump the fence, too. It's similar in height. Help! What do we do?