= Life span ===== I know of a Leonberger who is 14 years old and still alive and another that is 12 in the same household (not related to each other). Is it relevant to add an upper life expectancy, or is it best to stick to medium? 7 years does seem a little on the light side, Madeline Lusby claims 10-11 years on page 115 of her book. I'm not sure if it is truth or myth that breeding dogs live a shorter life than pets, but if anyone could confirm that from a reliable source, it might suggest that statistics for average life span are artificially low. Can this be changed to lifespan of 7-14 years?   