Dean, interesting article. A dog is not strictly speaking a pure carnivore, it is more of an opportunistic feeder- thus the slightly longer gut. If he had chosen a panther (obligate carnivore) which is our size, the intestines etc, would have been a closer match. Perhaps this is one reason why dogs were better able (and willing) than cats to adapt to us as our diet changed. Here in Queensland there are packs of feral dogs who feed on the fallen fruit in avocado orchards!