A lively chihuahua bites the bum of another dog as it plays with a football, in Ayrshire, Scotland. A British man has been named pet photographer of the year - for a record FIFTH year in a row. Decorated Paul Walker, 40, spends days with his doggy subjects in a bid to get the perfect photo. And his work has seen him encounter some of the most badly behaved dogs in the country. It has led to him carving a name as the naughty pet specialist - and allowed him to capture these hilarious doggy snaps that will leave you howling with laughter. From a chihuahua biting a mutt ten times his size on the bum to a fox terrier playing the piano - these loveable pooches are all up to no good. The stunning set also includes a dog jumping and barking at the moon and a boxer dog balancing a tennis ball on his nose. The images helped Paul bag his fifth straight Scottish Master Pet Photographer of the Year title - adding to his previous awards in 2008, 2009, 2010 and 2011.
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