Dragon chickens are among the world's  most expensive poultry as their massive thighs are a delicacy in Vietnam. The bizarre-looking breed, also called the Dong Tao chicken, is prized for its delicious meat.

A pair of the chickens can cost a staggering £1,600 as they are in very short supply as well as being difficult to breed.

Dragon chickens, usually served in high class restaurants .

The birds' bulbous legs are covered with reddish scales and can grow to be as thick as a person's wrist.

A male adult Dong Tao chicken can weigh up to 6kg. The hens are generally white, while the cocks have colourful feathers.