Chihuahua puppy for sale! Alert, charming, and graceful, the Chihuahua is a dog breed with a small size yet big personality. The breed comes in a beautiful variety of colors and coat types, including short and long haired. Although small, Chihuahuas are very intelligent, fully capable of training and competing in various dog sports like agility and obedience. Their bold personalities allow them to be careful watch dogs, and are likely to protect their loved ones from suspicious strangers.