Question about my damaged tree!?

Question

About a month ago I hit one of my 2.5 foot tall treelings with a weed wacker taking about 6 inches off of the top. I waited to see if it would survive and it did. Previously it has no branches and now it has a nice healthy branch growing upward out of the side. Even though it is growing a branch out of the side the top has not grown where I hit it with the weed wacker. So I was wondering if I needed to clip the top of the tree down an inch or so until I get to the green part of the tree or will it eventually fix itself?

Answer 1

My German Shepherd stripped the bottom 4 ft of our Maple tree of its bark.  The tree is around 15 feet tall.  What can we do to save this tree?