Well yes I believe thats true however my Lab is pretty good, its my mutt puppy I have to worry about. She has eaten Playstaion games, video cassettes, toys, CD Books, Shoes, mops, phones, notebooks, backbacks, pens, and much much more. And no I never left these things out, she learned how to open drawers and cabinet doors which I just learned recently, she is also a very good jumper which I just learned about too, she was such a clumsy non athletic little pup i never thought she could jump high. Well now everything is defniitly out of reach!
My lab I had, Winston, he would only eat his food. But he did like to chew on bras and socks. He never ingested them though. We made sure that he had plenty of toys and bones for him if we weren't in the room.