As of May 1st, Alaska Airlines is imposing some new rules governing your taking your support animals with you in the cabin. These new policies are being initiated worldwide as a result of numerous incidents of airline employees and some customers being bitten, both on-board the aircraft and in the terminals.

Starting May 1, customers flying with psychiatric service animals must provide animal health and behavioral documents and a signed document from a medical professional at least 48 hours prior to departure.

The airline also will stop allowing amphibians, goats and animals with hooves, tusks or horns. Miniature horses will still be allowed under the Americans with Disabilities Act.

Certified Service Animals, which are typically dogs helping owners with physical disabilities, are not affected by these changes. The new rules only apply to Emotional Support Animals.

Alaska Airlines typically transports about 150 support animals every day.