Cooking is the enemy of the nutrients and living enzymes that cats need to thrive. Small cats? They're designed to eat to other animals. And they're built to eat those animals raw. No, the cats living under our roof are hardly living in the wild, but biologically, they remain true carnivores. And their ideal diet would consist, for example, of freshly killed mice and small birds. Cats and their ancestors have been eating raw food for tens of millions of years.
The introduction of dry cereals (kibble) and processed canned foods into the diet of domestic small cats is, evolutionarily speaking, a very recent event.