i understand your point on wanting to be sure. I personally have always only hunted for animals i was going to eat (or if it was being a nuisance/pest and had to be eradicated), never killed things just to kill them. Unfortunately i dont think theres really a way to be "sure" an animal is ok without inspecting it, and to do that of course youre going to have to kill it usually (although you might spot something in a scope that could stop you before you pulled the trigger). I cant comment on the entrails.........ive seen the insides of many but wouldnt know what i was looking for, other than something thats abnormal.