Im finding it interesting, that we are finding anatomical and evidence of things we take for granted in daily life… for example this article of domesticated dogs. .. It sums up two points , domestic dogs have longer digestive tracts because they eat less meat then there wild counterparts , because they where feeding humans foods like , starchy scarps and all what might be laying around a human camp or settlement , during the rise of agriculture, these foods are not as all protein as wild animal would eat. They get more steady meals, but one with more vegetable content .
Main points learned
Both domestic dogs and cat longer intestinal tracks, then wild coiner parts
It is more likely that both cats and dogs, came to human encampments and started the domestication process then other way around