The IQ level of a yellow dog with a white face and black tongue may be affected by its breed and genetic background. Different dog breeds differ in intelligence, learning ability, adaptability, etc. Some dog breeds are naturally smart and easy to train, while other dog breeds may be more stubborn and difficult to train.

In addition, the IQ of a yellow dog with a white face and a black tongue may also be affected by the environment and training. Providing sufficient stimulation, care and appropriate training for yellow dogs with white faces and black tongues will help stimulate their intellectual potential and improve their IQ levels.