Wolf of wilderness freeze dried premium dog snacks are great tasting little snacks made from 100 pure chicken hearts pure fillet of salmon pure lamb lung or pure beef liver they are also 100 grain free the freeze drying process ensures that these delicious dog treats retain all their great flavour and vital nutrients the extremely long and very slow drying process extracts all the moisture from the snacks this gentle process means that there is no need for artificial colours or aromas w