We usually feed our dogs home-made food. But a month ago we picked up a bag of Beneful just to have something different for them to snack on. Within a few days both dogs were super sick. Vomiting, diarrhea, staggering around. We cut off that food and then spent the next week on vet visits. X-rays showed super enlarged spleens and some internal bleeding.
Eventually my 10 year old gal could not fight it any longer and her kidneys shut down. My 3 year old is just now pulling out of it, but he still has some problems. A diet heavy with cooked fresh beef liver and some dried dandelion root powder in his food seems to be helping.