Spirit Airlines announced Tuesday that it would join other major airlines in tightening its emotional support animal policy.
The rule, set to go into effect Oct. 15, will require passengers to provide 48 hours advance notice and complete additional documentation if they wish to bring an emotional support or psychiatric service animal on a flight.
{mosads}Previously, travelers only needed a signed document from mental health professional, but now they will also need a certification from a veterinarian and liability form which makes the safety and conduct of the animal their responsibility.
Airlines have been tightening restrictions on letting support animals fly recently because of a surge in usage and an absence of federal regulation.
Delta became the first major airline to update its police in January when it began requiring 48-hour notice and more documentation. United Airlines made similar changes in February, followed by Alaska Airlines and American Airlines.
Southwest announced an updated policy in August, limiting the emotional support animals to just cats and dogs and only allowing one per traveler.