Most people are familiar with therapy dogs, which provide emotional assistance to their owners. Dogs are only one form of therapy pet, however. Reddit user biggestlittlepickle shared a photo snapped by her neighbor, who is a flight attendant. According to biggestlittlepickle, the very live turkey you see below was riding the plane as a therapy pet.
The U.S. Department of Transportation allows therapy animals because they fall under the service animals category. In order to take a pet along on a flight, proper documentation from a mental health professional must be submitted to the airline at least 48 hours prior to departure.
Therapy pets, then, are in no way atypical occurrences on flights. What's unusual here is that the animal providing emotional support was a turkey.
Unclelimpy, a Reddit user and friend of the pilot, confirmed that there was a breathing turkey on board the flight and that the turkey rode a wheelchair in the airport terminal.