There are many unique genetic circumstances that are recognised to shorten a Canine's lifespan. The most typical is canine degenerative myelopathy, which can be a progressive neurological condition that affects the spinal wire. When age-similar DNA methylation improvements in pet dogs implicate very similar gene ontology classes as in humans, https://troyngvht.tinyblogging.com/pet-age-calculator-no-further-a-mystery-77480926