I’d be kind of annoyed if it wasn’t cat smegma for my cat smegma ice cream.

I think natural flavors have to be related to the name on the product - a small amount natural grape juice in apple juice to modify the flavor would be listed as an artificial ingredient.

I recall that used to be true, but don’t have a good way to verify it ever was other than reading the labelling laws, or if it still is, since companies fight a constant battle to degrade the usefulness of food labels.