Francois, I know, my goat guard dogs ( which have eaten raw meat and bones, organs, since birth) love to eat the goat pellet poo. So much, wondered someday if I might try them. Maybe.
I don't think there's many carbs left in them though. Certainly not to the extent of eating fruit. But of course wolves etc. will eat any fruit fallen from a tree. Since I haven't tasted the pellets, can't tell you what my guess is as to why they like them. They could be sweet tasting, and then it may be for bacteria, or fibre, or just something to chew on. I'd have to see a study to know for my self how many carnivores go for intestines or stomach contents before eating livers, hearts, back fat, testicles, eye balls, licking up blood etc. ( I have seen a video of an animal shaking a long piece of intestines to empty it before eating the sack itself ). I'm sure what's left over will be eaten in it's entirety by the next hungry batch of animals moving in to the carcass. And can very well imagine a whole host of nutrients inherent within the filtering layers of intestines/stomachs, with their connected veins and arteries running to the liver etc.
To clarify further with me, I tend to do better with a fruit a day like meyer lemon, or pomegranite, or other vit. C. rich variety, and lately seaweeds. I like a little avocado with meat, get carbs from my duck's egg yolks, some from fresh coconut, or the few other nuts I occasionally eat, and the few carbs from the liver I eat a couple of times a week. But then I feel lucky, for I can get really good fat from animals, fresh fat, that prepared properly tastes better than almost any food I know of. I really think there's an art or an 'instinct' that one needs to develop to getting sufficient energy from animal fat over carbs. I know I wouldn't thrive without my sources of those fats. That's why I've been questioning Lowenherz about his consumption of coconuts, as a possible alternative should the need ever arise. later, Van