How fast do the symptoms of kidney failure appear? The reason I ask is because I started a new bag of food, the green pea and venison, on April 13th. Would my cats exhibit any symptoms by now? My cats seem ok..they are eating and drinking and are playful. Shadow threw up twice last week but hasn't thrown up since. I caught him munching on my plastic plants and I assumed her threw up because of that. Magic has not thrown up at all. This whole recall has really gotten to me.