This is the moment a mother pig and three of her piglets squeal with delight after feeling grass under hoof - for the first time ever.<br /><br />The three little piggies, and a more circumspect mum, run around with excitement as they step out onto a field after a lifetime in a concrete pen.<br /><br />Mummy pig Georgina, three, had spent all her life in a concrete pen - where she was used for breeding - and had never been outside.<br /><br />She and her three piglets Mo, Larry and Curly, were rescued from a farm in Huddersfield, West Yorks., and eventually taken to the Lotus Lamb and Sheep Sanctuary in Pulborough, West Sussex.