Indeed!!! We are mammals, biology matters a lot!!!
Though nowadays it’s much easier to buy commercial organic raw food mixes, or super high quality grain-free kibble with raw coating for when the full raw is impractical, decades ago it was a very different story!
In the late 1980s I learned via health food store pamphlets from the first activists related to pet food reform about how all commercial pet food at that time used Grade 4 meat (not fit for human consumption, byproducts such as diseased parts, and gassed animals from animal control facilities - along with the flea collars some were wearing when gassed). That the food contained residue from pet anesthesia (still an issue is low grade pet food, news reports happen on it every few months) - along with nasty BHT/BHA. And this was vet-recommended? It enraged me in its lack of ethics and its dystopia and how the general public had been deceived - like with “Hill’s Diet” sold at vet offices 
At the time I switched to “natural” brands that didn’t have by products or chemicals - and started following the guidelines and vita-mineral mix based in Anitra Frazier’s “Natural Cat” book - because there wasn’t much more available in the health food stores books shelves and in the library.
THEN, whilst living in rural Scotland in the mid 90s I got to see my indoor/outdoor cats thrive on their many catches of fresh raw country mice - with amazingly new coats and a new general liveliness. Lost one eventually to roving boys with pellet guns, tragically. But the other - who continued a raw prey and other biologically appropriate meals lived to about age 22 which is apparently unheard of.
I’ve also helped some friends transition their animals onto biologically raw food and seen amazing healing occur. One special story was with a very grumpy, obviously in pain from arthritis, 11 year old tortoiseshell named Punkin. Her coat was dull, the slightest contact or unwelcome adjustment in her posture would be so painful she’d growl or bite - and she avoided walking much around the house. Poor thing! I’m sort of an animal whisperer and definitely an animal guardian - and Punkin was one of very housepets I’d interacted with who refused any affection and with whom I couldn’t establish communication - so uncomfortable was her body.
My friend told me the vet said Punkin was just old and arthritic, had probably been depleted from previously mothered a litter in past before adoption/spaying - and wouldn’t be around for too much longer. My friend had fed Punkin for years on the conventional veterinary-advised diet of grain-ridden low-grade ingredients junk.
When I explained to my friend that an anti-inflammation diet of biologically appropriate raw food with human-grade quality meat & organs and good fat from extra things like sardine oil and butter could really help Punkin, my friend was willing to try. At that time, independent pet stores had started to sell high quality frozen raw pet food - and I showed my friend how to thaw it and serve it and add enticing aromas like sardine oil or torula yeast to the top so as to lure Punkin to the new food. Punkin was finicky for only a couple days - and then starting eating two big meals a day… THEN - About two weeks later in the middle of the night there was some kind of thump downstairs in the kitchen - which my friend cautiously went to investigate. It wasn’t a burglar. It was Punkin ON TOP OF THE FRIDGE trying to open a package of buttery baked good. She had jumped a good 3 feet up from the countertop!!! And within a week or two she started more kitten behavior, like running around the house, chasing her tails, hilarious antics. And, she let me pet her, and purred. What a joyful confirmation of her wellness, and what a blessing personally for me!
Punkin lived many more joyful years - pain free, apparently! Her health recovery inspired various people who knew and loved her to switch their own animals over to some form of grain-free high quality food.