i think slankers pet food is 90/10, that's not anymore fatty that regular ground beef.
i have been eating pet food from a farmer i buy from here. it's extremely lean though.. just a blend of lean meat and organs, no extra fat. i can't even see any fat, though there must be some.
i really like the pet food i eat. i'm kind of still a wimp to eat organ foods any other way, so until i just start buying some organs and eating them, i keep incorporating pet food.