Are you sure it was actually cotton and not synthetic? Was there chemical(s) on the "cotton" ball that he ate, if so, are they toxic?
I would call your vet ASAP, but first I would have the info I just mentioned on hand.
__________________ ~ A friend told me I was delusional. I nearly fell off my unicorn. ~ °¨¨¨°ºOº°¨¨¨° Ann | Pfeiffer | Marcel Verdel Purcell | Wylie | Artie °¨¨¨°ºOº°¨¨¨° |