Dry food contains 6-10% moisture by volume
Canned food contains 60-90% moisture.
Semi-moist foods have a moisture content of 25-35%.
Try to look at the back of packaging not just the pretty logo. Cheaper brands tend to contain cereals like corn, wheat, barley and ash, all the good stuff that your dog would never eat in nature and that passes right through its bowels with little to no nutrition. Also something to note is these ingredients are quite often the source of most allergies in dogs and cats and bowel irritations. If you happen to be the owner of a brachycephalic dog you will probably notice when eating these foods that contain considerably more corn and wheat that can become much more flatulent (fart or gas) - See more at: http://www.sweetpeapugs.co.uk/pug-feeding.html#sthash.nX277ZeV.dpuf