Construct the Teeter Totter
For the doggie teeter, use a standard 2x12 board.
Cut the 2x12 board to 7 feet. Cut two pieces of 2x4 to a length of 11-1/4" (the width of the plank). On the underside of the board, draw a line at center point of the 2x12 board (3-1/2 feet from each end). Measure 3/4" off each side of the center-point line. Line up the two 2x4s to the two lines, (you should have an 1-1/2" between the 2x4s). Attach the 2x4s to the plank with 2-1/2" galvanized nails (Image 1). The 2x4s will hold the plank in place on the base of the teeter.
Paint the plank with exterior house paint mixed with sand. It is best to paint the ends of the plank brightly so your dog can easily decipher it as he approaches.