Contains a lot of waste
I have a dog who is very allergic to various things in his food. Since he can only tolerate beef and also likes sweet potato, this is the only food we've been giving him for a long time. Unfortunately, at his old age (16), he doesn't have any teeth left either. But for about a year now, the food has become very poor. There are always bits of bone waste, unidentifiable offal (which you can't even cut), and an awful lot of fat in it. That's why we only buy the small cans now.