Comment by anigbrowl
8 hours ago
Why would you expect anything else? It's also easier for larger people to pick up heavier weights, larger bullets to make larger holes, etc. etc. Of course larger animals are going to have larger muscles in their digestive tracts in approximate proportion to everything else about them being larger.
The direct proportionality is interesting, though. Not everything works out this way in nature; for example, many other things follow the square-cube law.
I too find it somewhat unsurprising, but I guess it's good that someone did a study.