Rubber spikes on the ball were the spots on the X-rays. I didn't recognize the other plastic pieces in the mess, but the owner did. That's a cattle ear tag. The dogs have been dragging them in from the pasture. The light came on.
Some ear tags contain insecticide for repelling face flies in the summer.
They have a slow release, highly concentrated form of organophosphate. Gaitor's stomach acid had speeded up that slow release considerably. I spent most of the rest of the day working on Gaitor, with the help of Dr. Talcott, and a raft of other people. The pharmacy at St. Joseph's Regional Medical Center was able to supply a critical antidote. Kiklevich, Mikicik, and Wardrup at WSU provided invaluable guidance.