I poured out cat Purina complete natural food at night in the dark and in the morning noticed about a 6-7 inch hard chunk about 4.5 inches deep in the cat dish. it looked like compressed sawdust and about 3 pieces of regular cat food stuck in it. the younger cat was gnawing on it. I took it away from him and called Purina. They said it was ok, just some food that was not formed into kibble. i asked if it could make the cat sick and the woman said no. a couple days later that cat is slowing down but still running and eating and functional. then he slows way down. now he is on iv fluids+antibiotics not eating, lots of gross details. i called Purina again to see if they had any ideas for treatment. they say it sounded like what was in the bag just 'build up of product that occasionally forms on processing equipment' and it is the same stuff in the cat food and would not make a cat sick. they have no ideas on treatment. i am just wondering if this happened to anyone else and if so, what improved the cat?