Yeah I know that fact Karl I looked it up when he got sick, but the pencil he ate was an old one 20 years old. I confirmed it form the poop, he ate one of my fathers college days pencils. So according to the vet it contain led if its that old, but am not sure if 20 year old pencils have the same chemicals structure, so I don't know if it's true.___. But thank god that the treatment was right So what's your opinion on the subject Karl?