Dogs are now the only service animals allowed on US planes – here are the craziest pets brought onboard in recent years

ONLY dogs will be allowed on planes in the future, with airline authorities cracking down on emotional support pets.

The Department of Transportation (DoT) has tightened the restrictions after a wave of animals being deemed for "emotional support" were allowed onto flights.

Unlike official service animals such as guide dogs, emotional support animals are often not formally trained.

Instead, they are often used for nervous travellers or those who suffer from anxiety or depression.

United Airlines previously said they had seen a 75 per cent increase in emotional support animal requests in 2017, while thousands of complaints against animals on board have been reported every year.

The new regulation will only allow service animals defined as dogs which are specifically trained to help with passengers who have a disability.

In a statement, the DoT explained: "The final rule announced today addresses concerns raised by individuals with disabilities, airlines, flight attendants, airports, other aviation transportation stakeholders, and other members of the public, regarding service animals on aircraft."

While emotional support animals are no longer allowed, dogs which are of psychiatric service will be allowed.

Here are some of the strangest animals to have been spotted into the cabin during a flight.

Ducks

Ponies

Turkeys

Kangaroos

Pigs

Roosters

Monkeys

Earlier this year, a woman suffering from PTSD was left stranded abroad after an airline banned her service dog from the flight, after crew claimed he tried to bite them.

Two “emotional support dogs” and their owners were booted off a plane after the mutts began barking wildly in the cabin after crew suspected the French bulldogs were pets rather than animals for providing therapy.

Last year, United Airlines banned hedgehogs and peacocks from being taken as emotional support animals.

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