Originally Posted by FWAAA

My BS meter just hit max.

Without reviewing the passenger's paperwork and/or examining the passenger and evaluating whether they suffer from an emotional or mental disability (the standard for an emotional support animal diagnosis), then a bystander's observation would be irrelevant. Passengers who are not treating (as a doctor or mental health professional) would have no way of knowing whether a fellow passenger's dog was a "true ESA" or a "BS ESA."