About three months ago my son switched his cats, Max and Zeek, to Nutro Natural Choice Complete Care Indoor Senior dry food and Iams Indoor Weight & Hairball Care, alternating between the two brands.
A few days ago Max became very lethargic and stopped eating. Two days ago we had to have him euthanized as his kidneys wer clogged with huge tumors. We will have Zeek tested also.
The cats have also put on an excess amount of weight while on this feeding schedule.