Not a Paleo adherent myself, but thought this was an interesting read in terms of what is sort of a Paleo approach to DOG -- yes, not human, canine, so it is a bit of a detour -- nutrition for mushing and some types of hunting that are endurance sports, http://www.mushing.com/articles/content.php?vw=2,,8,620 .
Dogs arguably haven't had the same time to evolve to deal with modern diets that humans have, and obviously also are a different species and have different metabolisms, etc., but it is still interesting how dog nutrition has sort of come full circle, at least for those with meaningful endurance needs.