The canine celebrity: Smiling pooch pictured with Palin, Vancouver kissing couple and Jon Stewart as 'Happy Dog' goes viral

Last updated at 8:02 AM on 28th June 2011

He’s probably got the biggest smile you’ll ever see on a pooch so it’s no surprise he’s already hanging out with celebrities.

‘Happy Dog’ is popping up in pictures with celebrities such as TV host Jon Stewart, actor Gary Busey and former Alaska governor Sarah Palin.

A picture of him with a Scooby Doo-style smile has gone viral since it was first published and he is being super-imposed onto a range of photos.

Riot: Happy Dog is pictured with the famous Vancouver kissing couple Scott Jones and Alex Thomas

All smiles: Happy Dog is grinning with Lethal Weapon and Point Break actor Gary Busey

Animal magic: Happy Dog appears in an image with a stuffed bear behind Sarah Palin on her sofa

Happy Dog is pictured on the famous photo of kissing couple Scott Jones and Alex Thomas, taken during the Vancouver riots earlier this month.

He can also be seen in Utah artist Jon McNaughton's painting One Nation Under God and has been pictured inside a spaceship.

The dog with the white teeth and human-like smile became an internet sensation this month when his photo was shared on Facebook and Twitter.

Spaced out: Happy Dog grins from inside a spaceship in one of many virals doing the rounds online

Painting: Happy Dog is pictured on Utah artist Jon McNaughton's artwork One Nation Under God

Swing: The pooch is in front of 'dancing eyebrows kid' and golfer Rory Mcllroy

He can be seen with TV host Jon Stewart talking about disgraced politician Anthony Weiner – and in two photos with Sarah Palin.

Happy Dog has also been placed in front of 'dancing eyebrows kid', the boy who became famous during an interview with golfer Rory Mcllroy.

The Huffington Post released a number of ‘photobomb’ images featuring the dog and encouraged users to send in their own.

Crazy faces: This photo featuring Happy Dog is said to have been taken during the 'exorcism' of a woman

On your shoulder: Jon Stewart talks about ex-politician Anthony Weiner and Happy Dog gets in on the act

Toilet humour: Disgraced politician Larry Craig is ironically placed in a bathroom with Happy Dog

Happy Dog is becoming as big a celebrity as Riley, the bichon frise-poodle mix pictured smiling while celebrating its first birthday.

The young dog was photographed in a party hat, unable to contain his excitement, as he prepared to devour a cake by its owner Maureen Ravelo.

The image taken by Ms Ravelo, from San Jose, California, spread like wildfire earlier this year.

Palin again: Happy Dog has made a number of appearances with former Alaska governor Sarah Palin

Talking heads: TV host Sean Hannity and Republic politician Michele Bachmann are joined by Happy Dog

Big head: Happy Dog missed out on eating ice cream with Santorum in this shot

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