
My Papillon is fed on Winalot canned. It is the only food that suited him. With anything dried but soaked he got terrible bouts of inverted sneezes, with some other brands of canned he got allergic reactions with scabs and sores. With Winalot his body is perfect and his coat wonderfully shiny. :)
I'd say the main reason a lot of people don't feed canned is because it is more expensive. It costs me as much to feed my tiny 3 kg Papillon as it does to feed my large dogs of 30-40 kgs.