Chihuahua puppies are tiny dogs with huge personalities, known for their alertness and playfulness. These charming and graceful pups can display both boldness and shyness, making early and consistent socialization critical for building confidence. Chihuahuas tend to be gentle with children and other pets, but they can develop "small dog syndrome" without proper training, leading to potential aggression and nervous biting or nipping. However, Chihuahuas are also highly intelligent and eager to please their owners, making them easy to train with positive reinforcement. With the right approach, Chihuahuas can be excellent companions and even excel in obedience classes.