Oh ya, I learned my lesson with groceries. If I leave a bag on the floor with cookies or bread in it for 5 minutes my three are into it. Even turning my back on the bag to put stuff away can be precarious. I never buy cookies with chocolate in it just in case. Haha.I honestly have no idea, but it's insane. If you blow your nose and leave the tissue within reach (aka: garbage), out it goes. With ours there's something feral about ripping it to shreds...
The worst has to be bread. Those butter buns from Costco in particular. My wife left a package out in the entranceway for 15min and when she came back our dog had devoured half the bag!