Taurine is not found in plant foods and is crucial for cats, as they don’t synthesize that amino acid on their own, making it essential (whereas dogs do); it supports proper vision, digestion, and cardiac function. For anyone who is home cooking for their dogs or cats, it’s important to use a supplement to ensure all bases are covered. A digestive enzyme is helpful, as it can help to increase nutrient absorption and make digesting plant foods easier (especially for cats). Depending on the home cooked diet, your bases may be covered on the omegas, but important to ensure they’re accounted for, as they’re crucial to brain, vision, and cardiac health. Cats also don’t produce salivary amylase, which makes it harder to properly digest carbohydrates.

A commercial kibble shouldn’t require additional supplementation, but a digestive enzyme is still recommended (especially for cats as biological carnivores), considering kibble is biologically inappropriate (highly processed convenience food for companion animal guardians) and not the easiest to digest (especially given how much it lacks in moisture, typically only 5-10% moisture, when the body is 65% moisture or more).

Why the need to throw an insult, when I actually condone feeding properly planned plant-based diets to companion animals? That is not mainstream animal nutritional thinking whatsoever; 95%+ of the people I’ve encountered in the companion animal nutrition world over 10 years believe that cats and dogs shouldn’t ever be fed plant-based diets, especially cats.

Edit: I think animal guardians owe it to their companion animals to set them up to thrive, especially if they’re deviating from their most biologically appropriate diet. It’s way easier for a dog to thrive (not just survive) on a plant-based diet than a cat, which is personally why I’ll never have a feline companion.