We do know that smaller (shorter lived) mammals at least have significantly shorter telomeres than humans.<p>Here&#x27;s a paper comparing max life span (MLS) against body temperature, body mass, and telomere length. [1]<p>[1] <a href="http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC3680702&#x2F;figure&#x2F;F1&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.ncbi.nlm.nih.gov&#x2F;pmc&#x2F;articles&#x2F;PMC3680702&#x2F;figure&#x2F;F...</a>