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A police dog recovering after being stabbed in the line of duty has been showing off his obedience skills by doing the "mannequin challenge".

The social media craze involves being videoed while staying as still as possible.

German Shepherd Finn became a media celebrity after he was seriously injured trying to protect his handler in Stevenage last month.

PC Wardell made a video of Finn and his kennel-mate Pearl, a drugs, cash and weapons dog, for the dogs' many Twitter followers.