Another study assessed the bacterial load in various types of dog food by analyzing 240 samples from raw meat dog diets, commercial dry dog food, or commercial canned food. "Salmonella enterica" was found in almost 6% of the raw diets, while "Escherichia coli" was found in almost 50% of the raw diets. "E. coli" was also found in the commercial dry and wet dog foods, but in lesser amounts. This study determined that bacterial contamination is more common in raw meat diets than commercial dry or canned foods.