Ill be putting in fencing for my GSD this weekend. She has "issues" with other dogs that I am currently trying to work out of her. Shes fine as long as I bring them up to her but if she sees them in her yard or any where near her she flips. I want to make sure I get a fence high enough so when she sees a dog going by shes not going to make a jump for it. How high should I make it? I had a GSD when I was younger that could clear 4 ft easy. Im thinking 6 ft.... I think we are going with cattle fencing as we have much ground to cover. Any other suggestions that wouldnt be real costly?