A four-legged litter-picker is sniffing out lost balls in the Ashdown Forest.Bertie, a six-year-old golden retriever from Crowborough, is providing an invaluable service by collecting tennis balls which have been lost by other dogs.He now has a collection of more than 100 errant balls.Bertie's owner, Michael Carden, of Ghyll Road, said: "Since I've retired I like nothing better than a long walk in the Ashdown Forest with Bertie and being a retriever he frequently brings me his 'finds',...
