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Since the 1930s, the canine life span has increased more than 70 percent, from seven years to 12! And that's just the average. With advances in veterinary care and nutrition and more knowledgeable owners, many good-sized dogs now live to 14. Of course, no one can really predict how long an individual dog will live.
It depends on the size and the breed. Most small dogs can live up to 18 years and possibly more. Medium dogs can live up to 16 or 17 years, and large dogs usually live betweenâ¦ 12 and 16 years. Larger dogs do tend to have shorter lifespans, and many of them develop joint and spinal problems later in life. However they are also full of life and energy for most of their lives. Again it depends on the breed.