PIC BY MATT STEWART / CATERS NEWS- (Pictured is Beryl with Daisy) A runt of the litter who was left to wander as a stray could now hold the title of Britains oldest dog - after turning 22 years old. Jack Russell Daisy was rescued by owner Mark Barsby-Finch in 1993, when she was a two-year-old pup at a rehoming centre. But twenty years on, the pampered pooch is still going strong. Experts calculate that the terrier is the equivalent of turning 100 in human years - after scrapping the traditional claim that one dog year equals seven human years, as different breeds of dog age differently. SEE CATERS COPY *** Local Caption ***