Consider yourself lucky. Bella is 12 weeks old and just learned to jump..and now I cant keep her in her 2 1/2 foot pen..
..now I have to worry all the time, because she only weighs 2 lbs and she is soooooo tiny.I wish she would have never learned to jump trust me..and just like the OP, she is doing the same thing with the back of the couch..this is as bad as when my kids learned to walk..lol