Any well behaved pet can be an Emotional Support Animal as long as you suffer from a qualifying condition
Under US law an Emotional Support Animal (ESA) is a pet which provides therapeutic benefit to its owner through companionship and affection. Emotional Support Animals are not required to have any specialized training, they require only as much training as an ordinary pet requires in order to live peacefully among humans without being a nuisance or a danger to others.There are two federal laws which grant special rights to owners of Emotional Support Animal:
In December of 2020, the Department of Transportation announced that airlines no longer are required to give special consideration to pets who were once deemed ‘Emotional Support Animals’ or ESA’s.
It has paved the way for airlines to establish their own rules for such pets- and most airlines have indicated that ESA’s are no longer welcome as such. In fact US airlines have unanimously adopted these rules.
The rules for trained service animals have not changed.