6. Shih Tzu
Until the 20th century, these Chinese dogs were virtually unknown in the Western world, though there were considered the favorite pets of Chinese emperors. These lively and affectionate dogs can live for 14 years because they have a strong immune system. The only type of deceases to which Shih Tzu are prone are the skin ones. Therefore, it is necessary to keep them properly groomed.
These dogs are known for their playfulness and intellect. Dachshunds are extremely devoted to their owners and can keep them happy for as long as 14 years. The record of Dachshund’s longevity is 17 years.
It is one of the most popular and lovable dogs in the world. Labradors are an exceptional breed because large dogs usually have an average to short life expectancy. But these dogs can live for 10 to 12 years, under the condition that the owner takes proper care of the dog, especially of its hips.
Chihuahua is one of the tiniest breeds of dogs but it is only one of the most long-living. The usual lifespan of these lively animals is 15 to 20 years. Since Chihuahuas originate from Mexico, they can hardly withstand cold weather.
Surprisingly, most mutts live longer than purebred dogs. Perhaps it can be explained by the fact that their immune system is able to withstand almost any pathogenic germs. The average lifespan of a mutt is 14 years but most of them can live even longer.