
1) Emotional support animal 2) One allowed to pre-board
Found on
https://www.crosswordclues.com/clue/service-dog

A service dog is a type of assistance dog specifically trained to help people who have disabilities including visual difficulties, hearing impairments, mental illness, seizures, diabetes, autism, and more. Desirable character traits in service animals typically include good temperament or psychological make-up (including biddability and trainabili...
Found on
http://en.wikipedia.org/wiki/Service_dog

A dog trained to assist a person with a disability.
Found on
https://www.encyclo.co.uk/local/21273
No exact match found.