The proposed changes announced on Wednesday include only allowing specially trained service dogs to qualify as service animals, which ride for free in a plane’s cabin. Any other animal used for emotional support or simply to make a passenger “feel better” would be considered a pet and airlines would not be required to allow them on board, the DOT said.

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http://www.accessibilitynewsinternational.com/emotional-support-animals-could-soon-be-banned-from-planes/