Negativity accumulates and breaks the character of the dog, making it timid and withdrawn, but this is only one side of the coin. After all, a deeply suppressed mental pain can subsequently shoot out, the dog will become uncontrollable, cause trouble, and no one can say what will become a secondary cause. Although, this rarely happens with the Tervuren breed. Rather, the animal will withdraw into itself and will often simply ignore the owner. They can learn many different commands because it is not for nothing that they are used in search operations and as assistants for the disabled.