person A: Everytime my cats run out of food I have to repeat to my fiance why they need a specific kind of food that happens to cost more then normal cat food. He just doesn't understand the brevity of the situation and why it would be so much cheaper to just buy the stupid food then to pay for a bunch of vet bills due to them not eating the certain food.
person B: Cats eat everything_comma_ they are not humans
person A: Sure they do but mine can only eat a specific kind of food or they get bladder stones which are very expensive to treat and if not treated will kill them. So its pretty important
person B: The buy yourself the food