Shi dog is actually what we often call a native dog. Why does it have to have a black tongue? In fact, this is just the preference of some dog owners. In fact, the color of a dog's tongue depends on the dog's genetic background and breed.

It should be noted that the dog's tongue has nothing to do with its health, so the owner needs to pay attention, regardless of What is the color of a native dog's tongue? As long as the dog's tongue has no other abnormal symptoms (such as ulcers, pain or swelling), it is normal.