Research overview: the feline requirement for preformed arachidonic acid

Cats require preformed arachidonic acid, an essential fatty acid, in their diet because they have limited ability to synthesize it from plant-derived linoleic acid, a conversion that omnivores perform efficiently. Arachidonic acid is found in animal tissues, reinforcing the obligate-carnivore nature of feline nutrition and its role in inflammation, reproduction, and skin and coat health. This overview synthesizes the nutritional-biochemistry literature rather than one citation, describing why the cat's reduced enzymatic capacity makes this fatty acid dietary essential, the physiological roles it serves, and how it must be supplied in animal-based ingredients. It matters because the arachidonic acid requirement is another example of how cats depend on nutrients available only in animal tissue, shaping the formulation of nutritionally complete cat foods and underscoring the limits of plant-based feline diets.