Do pets belong on planes?

Friday Forum: Should we leave our furry friends at home when we fly?

Two strange animal incidents at airports have triggered a new debate about pets on planes.

First up: the stowaway cat that crawled into a passenger's carry-on luggage in New York recently. The TSA at JFK took these photos:

A few days later, a woman in Madison, Wis., accidentally sent her dog through the scanner — which is generally not how pets are screen…