At least those things are FOOD. Labradors seem to completely lack the ability to distinguish between food and non-food when it comes to wolfing things down.
I took her to the vet a few months back as she was constantly vomiting. . .the vet did an x-ray and found FIVE rocks working their way through her system.
She also loves to chew on my husbands pillow and pillowcase. She leaves mine alone but eats his. Smart girl.