Large and old are factors on the indivdual. But preyed upon is a factor impacting on the history of a species (all individuals). So a (in evolutionary terms re

Large and old are factors on the indivdual. But preyed upon is a factor impacting on the history of a species (all individuals). So a (in evolutionary terms recently) huge, old rodent, still carrys the baggage of the past. The size matters only in evolutionary time lengths - if a lot of individuals are to big to be predated. PS: Was the factor of age reduced cell division as a tumor hiding factor even removed from the statistics? Finally what about metabolism rate as amplifier of cancer? Slow metabolisms with a constant intake (no peaks of production and consumption), no constant heating costs due to small body size. My "Speculation" is just there to remind people that taking some individual factors and correlating them into seemingly meaningful results ignores the complexity of the situation.