The dog is fed a special diet that contains unique protein sources that he's never before eaten, and so should not be allergic to. (thesprucepets.com)
A mix of unique proteins in your dog's diet can also help him maintain a shiny coat and keep skin healthy, thanks to the Omega fatty acids it contains. (petguide.com)
These are unique proteins in nature which account for over 80 % of the total in the sweet potato plant. (supernaturalacnetreatment.com)