She is perhaps not a conventional beauty, but Zappa's unique look has earned her a legion of fans.

The Italian greyhound comes from show dog heritage, but is better known for her tongue, which lolls out the side of her mouth.

According to her owners Sadie, 23, and Rosalie Millen, 28, the dog's somewhat unusual expression is due to a dental issue that is common to the breed, which has resulted in the pooch losing all but two of her teeth.

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According to Zappa's owners the dog started sticking her tongue out of the side of her mouth a few years ago

Zappa lives with two other dogs as well as four hairless guinea pigs, Peanut, Pickles, Pepper, and Pipsqueak

Zappa used to have a full set of teeth and was at that point able to keep her tongue in her mouth

Italian greyhounds are prone to dental problems because of their large teeth, which generally do not fit too well into their narrow mouths

Zappa's owners Sadie, 23, and Rosalie Millen, 28 from Pewaukee, Wisconsin

Despite this however, Zappa is still able to eat like a normal dog and lives a privileged and happy live in Pewaukee, Wisconsin.

Sadie said: ‘Our parents got Zappa in Milwaukee when she was a puppy. Her parents and siblings were show dogs but she did not meet show dog standards.

‘Zappa's quirks and unconventional beauty make her even more special to us.’

The 15-year-old pooch also lives with two other dogs, a standard poodle named Bazinga and a shih poo named Dylan, as well as four hairless guinea pigs, Peanut, Pickles, Pepper, and Pipsqueak.

Her owners say she is a creative dog who knows how to keep warm during the cold Wisconsin winters.

‘She sleeps under jackets, blankets, and even inside people's shirts. She has an impressive wardrobe that helps her stay warm and stylish all year long,’ said Sadie.

Zappa has become increasingly popular online and many dog lovers have reached out to the family to share their admiration for the pooch.

The dog's owners said the pictures of Zappa show how rewarding it can be to take care of a senior dog

Sadie said: 'She has an impressive wardrobe that helps her stay warm and stylish all year long'

A dental issue common to the breed resulted in Italian greyhound Zappa losing all but two of her teeth

Zappa the Italian greyhound pictured sticking her tongue out for the camera while enjoying a bath

‘We hope to show how rewarding it can be to take care of a senior dog. Zappa brings so much joy to our lives,' said Sadie.

‘It has been amazing how Zappa's social media accounts have connected us with dog lovers from all over the world.

‘Nothing feels better than when someone tells us that a picture of Zappa made their day’.

Italian greyhounds are prone to dental problems because of their large teeth, which generally do not fit too well into their narrow mouths.

Zappa's owner said: 'Nothing feels better than when someone tells us that a picture of Zappa made their day’

Zappa's owners said that the dog's social media accounts have connected them with dog lovers from all over the world