AAFCO defines “natural” as “…derived solely from plant, animal, or mined sources… not containing any additives or processing aids that are chemically synthetic except in amounts as might occur unavoidably in good manufacturing practices.”
Loosely interpreted, this definition could include a range of “natural” products, including tobacco or any other naturally grown drug or substance.
None of these “all-natural” products are considered healthy additives for your kitten. So it is apparent that regulatory work is needed to define the true beneficial use of all-natural. Also noteworthy is the fact that nowhere within the definition are plant and animal by-products excluded. Not only are they “natural,” but they contribute valuable nutrients as ingredients in human and animal foods.