Is it though so obvious? Because herbivores have canines too. And like herbivores, we only have a small opening of the mouth, a non-scissoring opening of the mouth and the teeth line is unaligned with the articulation point of the jaws (which is how it is for herbivores). Also with regards to the mouth, we drink water by aspiration (like herbivores), whereas carnivores bring the water in with their tongue. We also don't need to get vitamin A directly from animals as we are able to synthesise it ourselves from vegies, like herbivores and unlike carnivores. So it seems to me that we are mainly plant eating machines with a certain but very small degree of meat processing capabilities. Thank you for the reply my friend!