– Pink – Sign of a perfectly healthy dog. – Red – Sign of diseases like diabetes, kidney issues, bacteria, melanoma, etc. – Yellow – Sign of liver or gall bladder problems. It can be a sign of jaundice too. – Purple/Blue – A sign of lack of oxygen in the body, can be a signal of Hypoxia, cyanosis, and liver disease. – White/Pale – Indicates a lack of red blood cells in the body, and can be a signal of Leukemia, anemia, internal bleeding, etc.
The dog tongue color chart is an amazing indicator but not a foolproof way to be sure about your dog’s health.