The Science Selective Balanced Guinea Pig Food is recommended by vets and provides a tasty balanced diet for guinea pigs with natural ingredients including dandelion and fennel. It is high in fibre to help promote healthy teeth and tummies and has added vitamin C to help keep your guinea pig in the very best of health. Selective also contains linseed, a particularly good source of Omega 3, which helps to regulate coat shine, thickness and colour intensity, as well as supporting healthy skin.