One of the longest living breeds, Chihuahua has an average lifespan of 15-20 years. These small canines give you a long time of wonderful adventures. The longest living Chihuahua ever to have been recorded died at the age of 20-years-old. Yorkshire Terriers live an average of 17-20 years. It is also a tiny dog breed and they are a favorite of many dog lovers. The average life expectancy of these fluffy little dogs has 12-16 years. These wonderful canines are also popular among pet owners, and luckily they bring many years of love. With a lifespan of 12-15 years, these lively characters are another long-living breed. On record, a Dachshund named Chanel lived to be 21-years-old. One of the best dog breeds, toy poodles live longer with an average lifespan of 12-15 years. The oldest living Toy Poodle was Seamus, who lived till 20-years. Smart and easy to train, toy poodles may seem very different from their larger counterparts. Another popular small dog breed, Maltese has an average life expectancy of 12-15 years. These dogs are an ancient breed that originates from the Mediterranean island of Malta. The best thing about these dogs is that they shed very less. Another common small-breed, Lhasa Apso are wonderful dogs having lifespan of 12-15 years. In ancient times, these dogs help to keep watch over Buddhist temples. One of the most popular dog breeds around, Pugs have an average lifespan of 12-15 years and their personalities last their lifetime. These are ancient Chinese breeds that have maintained their popularity over the years. These dogs are considered to be one of the best for kids owing to their docile nature but active lifestyle. This breed of dogs lives around 12-15 years. The longest living Beagle named Butch passed away in the year 2003 at an amazing 27-years-old. This feisty breed of dogs has just as much trainability and energy as its larger counterpart. These dogs live an average life of 12-15 years, giving you plenty of time to tackle the various sports of dogs that they are seen competing in.