Kate Middleton,  Duchess of Cambridge, presents a sprig of shamrock to six-year-old Irish Wolfhound Conmeal.

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Drummer Oliver Vaughey, 22, who has been a dog handler for two-and-a-half years, said: 'People saw him shake his collar, probably as a thank you.

'He has been our mascot for four years and always marches in front of the regiment.'