Yes totally (well you don't have to buy another bowl, u can just give it a rinse and dry I would definitely try treating the biscuits and wet food as completely different meals to be had at different times... (like you might have eggs for breakfast, roast for lunch and then cake for tea, rather than a bit of each mixed up 3 times a day!) - and let the one go down for a while before letting him have the other. And of course make sure he's always got fresh water down xx