While a standard Lhasa Apso is expected to live 12-14 years, there are many that live well beyond this estimation. The longest living Lhasa died at the age of 29 years in 1939. It is unknown as to the exact causes of the dog’s death. 1939 was the beginning of WW2, a known struggle for the breed’s survival. Other Lhasas have been known to survive into their 20s as well.