American Airlines published a policy in response to a rise in people flying with so-called emotional support animals on board with them.

Passengers will be prohibited from flying with frogs, hedgehogs, and goats even if they are therapy animals. Tusked animals will be banned from flying, but miniature horses will not.

The new ruling expands the airline's banned creatures list to include amphibians, spiders, goats, snakes, "non-household birds", or any smelly or unclean animal.

Reptiles, hedgehogs, insects, and rodents are also banned, as well as any "animals with tusks, horns or hooves (excluding miniature horses properly trained as service animals)".

In addition to expanding the list of banned creatures, the carrier will also require a doctor's note for any animal.

https://www.bbc.com/news/world-us-canada-44132340