What do Christmas trees have to do with pig tail biting?

Around mid-January streets are filled with abandoned Christmas trees for waste collection. For the omnivorous pig, nothing classifies as waste. These little trees are in fact a good opportunity to reduce costs. Why? Because wood can be a good enrichment material for pigs. Getting Christmas trees for free can safe in buying pig toys and help in reducing tail biting, says says pig welfare expert Dr Irene Camerlink. It is in their nature to drag with branches and logs Pigs in nature forage the wo