Natasha's addiction to latex paint on the walls has been a real problem. I blocked off the walls with page protectors, and she learned to pull out the pushpins to get at the wall. Double layers of page protectors weren't much better - still she could pull out the pins.
I finally gave up and put up wainscoting in the hall where she likes to chew.
Fingers crossed... I chose paneling with a hard shiny surface, so that little bunny teeth couldn't get any purchase on it. We'll see how it works.