That explains why my dog doesn't understand me when I tell her not to eat the furniture, or rocks. I should just tell her, "don't take in any more rocks!"
That should work, once she understands that she is embarrassing herself and showing a poor command of language by eating non-food, she'll stop!
(It's something she grew out of, like eating logs if they were rotten enough. I don't know if she had pica or was just an even more enthusiastic chewer than the usual puppy)
