Despite their miniature size, Chihuahuas are full of charisma. They can seem fearless as they take on people and other dogs much bigger than them with tenacity.
Though it may not be obvious while your Chihuahua is a puppy that basic obedience will be important, Chihuahuas benefit greatly from obedience training. Training will develop self-control and build confidence, both of which are extremely important for your Chihuahua.
Chihuahuas are eager to please as well as being sensitive and somewhat prone to being fearful, so be careful during training that your pup is enjoying the activity as much as you are.