The Chihuahua, a spirited small dog and a Mexican symbol, has ancient American roots dating back to pre-Columbian civilizations. Weighing under 6 pounds, their terrier-like character combines grace with a distinctive 'apple' head and expressive eyes. Available in various coat colors, Chihuahuas are loyal and charming but require training to manage their bold nature. Well-suited for city life, they prefer gentle play and warmth, thriving in affectionate environments.