She is a smart little girl, I'll give her that, it was just so surprising when she did it. We have a cat, and obviously most cats do that when they go (cover up their business with cat litter)..but I'd never seen a puppy do anything to cover theirs up until this little habit of Bella's. What's really strange to me is that she never did it with the disposables. lol...hence why I think she must like the designs on the washables.