The Chihuahua. Many agree this dog has come as a present directly from Satan himself! The feisty Chihuahua is a diva who demands, rather than politely asks! These tenacious little dogs may be small but oh boy are they mighty! Incredibly loyal and protective of their owners, the Chihuahua makes a fabulous companion dog. Their bodies often outlive their teeth, making them known for their adorable old-age 'mlems' where their tongues hang out their toothless mouths!