In a world where bigger is often thought of as better, in recent years, pets seem to have gone the other way. From Paris Hilton and the craze of the handbag dog, to more unusual pets such as the exotic marmosets - it’s clear some people that think pretty things come in very small packages. The cameras follow Craig Glenday, Editor in Chief of the Guinness Book of World Records, as he heads to America to investigate two potential new Record Breakers. In Florida he meets a donkey called Knee High to see if he measures up to his name, nd in San Diego, he has a surprise in store for the owner of the shortest cat in the world, Fizz Girl. In the UK, the programme follows Irene and Mo in Essex who own a miniature horse farm running pony parties for children and meet their tiniest foal ever, Acer, who measured just 14 ¾ inches at birth.