Go figure, I have the same problem with Tinky
For example, just about an hour ago, I left Tinky in her xpen for 30 minutes. I come back downstairs to see her poop eaten and chopped up into 5 little pieces. I had to wash her paws and brush her teeth.
I tried feeding pineapple to her. It worked the first day and she stopped playing with it. But she went back to her bad habits.