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They’re not true teeth, but lamellae, or more precisely pectines.
Comment from “Jess” at the link:
“Whatever they are, a pissed off goose will use them. It hurts and they usually won’t go away until you smack them with a shovel.”
Experience is knowledge, and knowledge obtained from another’s experience is often better. If you’re gonna go and piss off a goose, bring a shovel to the fight, and that’s The Blogmocracy Practical Tip O’ The Day, presented for discussion on The Overnight Open Thread.