But some restrictions on ESAs don't fly with the Department of Transportation (DOT), leading them to crack down on the crack down.
Delta says that there has been an 84 percent increase in animal incidents since 2016, thanks in part to the increase of ESAs on airplanes. Last year, Delta airlines banned pit bulls and pit bull-related dog breeds after two airline staff were bitten by the breed while boarding a flight from Atlanta to Tokyo.
"We must err on the side of safety. Most recently, two Delta employees were bit by a pit bull traveling as a support animal last week. We struggled with the decision to expand the ban to service animals, knowing that some customers have legitimate needs, but we have determined that untrained, pit bull-type dogs posing as both service and support animals are a potential safety risk," Delta told People regarding the new rule.