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Although chewing tobacco was used in an attempt to sedate the animals - by rubbing it into their gums - in 1941 a bull being ferried for the Department of Agriculture became agitated and put its hoof through the hull.

Chewing tobacco is linked to mouth cancer, gum disease and tooth loss.

“People can be reluctant to move into an oral tobacco product if they view it as similar to traditional chewing tobacco,” company spokesman Corey Henry said.

But unlike other nicotine-containing products, such as snus, chewing tobacco and dip, ZYN and similar pouches don’t contain tobacco leaf itself.

“In maximum security, we’d draw a board and then shape tissue with water into the pieces,” he said, explaining that he’d send messages containing his moves via old chewing tobacco cans, thrown “24 cells down from the dude I’m trying to play.”