A Chihuahua dog is incredibly smart. It is just not interested in being obedient.
In tests, Chihuahuas only rank as the 125th most intelligent dog breed and are classified as having fair to low intelligence. However, this is misleading because these tests are based on how quickly dogs learn a command and how often they obey it. Chihuahuas typically have no interest in learning or following orders.
However, they are brilliant at getting humans to understand what they want. They can easily train their owners to indulge their every whim. They learn how to get away with whatever they want and still be petted and cuddled by their owner. No other dog breed is quite so intelligent when it comes to training humans to understand that, as a Chihuahua, it’s the boss.