Good thread, although rather disappointed that the ability for dogs to utilize ketones for energy is not examined in any depth.
Dogs have definately evolved to utilze carbs much more efficiently than wolves:
https://www.latimes.com/archives/la-xpm-2013-jan-23-la-sci-how-dogs-evolved-20130124-story.html
However seems rather short-sighted to assume that dogs are able to handle carbs in a manner any better than humans, who've had that utilization ability for 800,000 years:
https://www.npr.org/sections/thesal...-carbs-a-brain-food-for-our-ancient-ancestors
How do dogs handle carbs, in a nutshell?
https://www.thebonesandco.com/blog/how-dogs-use-ketones-and-glucose
Yes, its a corporate site, however the basics resemble human metabolism pretty closely so it is not factually incorrect AFAICT.
Considering the above, and the fact that AKC seems positive-ish on Keto
https://www.akc.org/expert-advice/nutrition/keto-diet-dogs-know/
While protein is obviously important, why does carb content often seem overlooked as it has a known disease profile in humans?
https://www.humfeldchiropractic.com/the-dangers-of-excess-carbs/
So, since kibbles can run from 30-60% of a dogs diet, and considering how recent their adoption of carb metabolisation is, and how poor quality carbs can end up being broken down into ammonia which adds additional load on the kidneys, it would seem like while a discussion on protein is good to have, as or perhaps more so would be a carb discussion.
Also a fat discussion, as dogs are easily able to use ketones as every mammal is, which is a stavation adaption.
Just because dogs can utilize carbs does not mean 30-60% is actually healthy for them.
Yes I know, off-topic much?