Low grade, controversial or vague ingredient we usually recommend avoiding
Natural colourings in dog food
Despite the fact that numerous studies have indicated that dogs are largely colourblind, many manufacturers feel the need to add colours to their foods. Although many pet food manufacturers still use artificial colours, more and more are turning to natural alternatives as the anti-additives movement gains ground.
Natural colours are much less vibrant than their synthetic counterparts and are much more sensitive to environmental conditions like heat, light and pH. Common natural colorants include beetroot, caramel, paprika, grape and turmeric and although none are at all harmful to dogs, they also aren't at all beneficial.