How many cups are in a 16 lb bag of eukanuba dry dog food?

As an approximation, my 40lb bag of dry Eukanuba large breed puppy food fits pretty well in a 45 quart container.

45quarts * 4 cup / 1 quart = 180 cups.

180 cups * 16 lb / 40 lb = 72 cups.

This is just an approximation based on how the large nugget food fits in my container. If you have a scale that reads ounces you could put cups on it until it reads 16oz and multiply by lbs in a bag.