Plenty of tasty ingredients make gimpet schnurries purries with taurine chicken salmon an irresistible treat they are rich in taurine which is important for your cats eyesight alongside convential dietary fibres purries also contain a lactose derivative with a high content of tgos transgalactooligosaccharide tgos is a soluble dietary fibre derived from milk it acts as a food source within the intestines for friendly bacteria their production hinders harmful bacteria friendly bact