Cinder Block retaining wall
New here needing some advice. I have a cinder block retaining wall across my backyard. I need to raise it some to keep the dogs in. It has a cement cap so to speak on the top. I've thought about some sort of wrought iron or metal decorative fence a couple of feet in hight but can't find any. I've also thought about adding two more rows of block but not sure if I should put them on top of the cement cap. I'm also interested in painting the wall. Any help or advice you can provide is greatly appreciated.