average lifespan of a chihuahua
#1 â Chihuahua. Chihuahuas are one of the longest living breeds, and perhaps because theyâre also one of the smallest. With an average lifespan of 15-20 years, these little guys will give you a long time of wonderful adventures. The longest living Chihuahua on record actually passed away in January of this year at 20-years-old.