Why does the label say a cup only holds e.g., 3.8 ounces?
There are fluid ounces that measure volume (16 ounces in a pint), and there are ounces that describe weight (16 ounces in a pound). A measuring cup measures volume, but not weight. It turns out that 8 fluid ounces of water weighs approximately 8 ounces. Pet food, however, is less dense than water. So 8 fluid ounces of food generally weighs approximately 4 ounces.
