Who benefits from pig toys?

Who benefits from the development of pig toys? Pigs because they have some entertainment, farmers because there is less tail biting among the pigs, or the industry by making profits out of the sales? Pig welfare expert Dr Irene Camerlink takes a critical look at pig toys and what they are good for. European legislation states that pigs in all production stages should have permanent access to environmental enrichment materials in sufficient quantities, to enable proper investigation and manipu