I have a 32x32 area with wood posts and 2x4 welded wire fencing six feet tall. It also has buried wire 18 inches into the ground so predators can't dig in. This is where I plan on having my new kids grow up when they first come home here. However, I think they need a much larger space as they get older so I'm working on refencing an area by my barn that's closer to 1/2 acre. The fence there is chain link but only four feet high and nothing buried into the ground. Is that a safe height for the goats so they can't jump/climb out? Do I need to worry about them pushing under the fence also if it goes to the ground but not into the ground? Any other fence help would be appreciated.