The US is planning on limiting the kinds of animals that airlines must allow on board free of charge.
Proposals to restrict air travel to guide dogs has been put forward by the Department of Transportation.
The proposal, which is subject to public comment, was put forward following concerns that passengers were falsely claiming pets as “service animals”.
If approved it would mean that so-called "emotional support animals" would no longer have the same rights as canines helping those with disabilities.
The proposals would mean that the animals would be required to have training.
US airlines welcomed the plans and said an increase in animal travellers had led to complaints.
In the past, animals passengers have tried to bring into the cabin include peacocks, squirrels and turkeys.
In 2018, Delta said some passengers had tried to board with "comfort turkeys, gliding possums, snakes" and spiders.
Nicholas Calio, president of industry lobby Airlines for America told the BBC: “Airlines want all passengers and crew to have a safe and comfortable flying experience, and we are confident the proposed rule will go a long way in ensuring a safer and healthier experience for everyone.”
If the changes are agreed it would bring the US closer to the UK which does not recognise emotional support animals.
Only guide dogs and dogs helping people with disabilities are allowed on flights in the UK.
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