five-year-old darius is 4ft long and weighs just under 3st , the king of the continental giant breed .
he is set to lose his title to his son , jeff .
aged only one , jeff has held the record for the world 's biggest rabbit , with different animals , since 2008 that annette , who has owned 100 bunnies over the past ten years , says the art of giant rabbit-breeding is simple that