A sweeping study of chemical marks along the genome may help explain why the tiny Prague ratter lives up to 14 years, whereas Irish wolfhounds reach age 10 at most.BEST ANIMAL PHOTOS/SHUTTERSTOCK
https://www.science.org/content/article/chemical-switches-genes-may-help-explain-why-large-mammals-live-longer?utm_campaign=news_weekly_2021-10-22&et_rid=193273214&et_cid=3968898