Both Delta and United Airlines have updated their policies for service and emotional support animals. The airlines now require passengers to submit health and vaccination papers for uncaged animals as well as documentation that the animal has been trained. Emotional support animals also require a letter from a doctor or licensed mental health professional. Behind the recent policy changes is the incredible increase in incidents involving people taking advantage of disability protections and boarding airplanes with animals with questionable credentials. United Airlines has seen a 75% increase in “customers bringing emotional support animals onboard” and Delta claims a 84% increase in “incidents” involving animals.

Disabled in Action Activist at The Largest Minority
National Public Radio