Carrion can be well over 1000kg and 5m… Depending om what type of animal we’re talking about.

The scanner’s part of security, which is potentially shared between multiple airlines with multiple cabin bag weight limits, so it wouldn’t make sense as the place to weigh things. It only works if it’s done somewhere airline-specific, like check-in or boarding.

In all airports that I’ve been through (all in Europe), the scanners for people + their carry-on luggage are from the customs agency, so from the government. They won’t check or enforce any airline weight limits there. The airline may still ask to check the weight of carry-on luggage at the gate, but I’ve never seen it as an automated process, only as spot checks.

Hmm, perhaps. Good point, but I’ve flown enough that I should have seen someone flagged for overweight bags.