According to this REPORT, a French bulldog died after being moved from first class to coach on an Alaskan Airlines flight.

Apparently, the Plaintiff was asked to move mid-flight from his first class seat.  At that time he explained that moving the dogs before takeoff would be “extremely dangerous for the dogs,” noting that they were “calm at the moment” but “would not be calm anymore now that the plane was full of people.”  From what we gather from the article, the dog got anxiety b/c he was too close to other people in coach.

We're not the biggest fans of cramped leg room in coach, but a wrongful death pet law suit?  We'll see how this goes.