I had this problem when Laci as a pup and got a few great little tips here, one was adding a little parmasian cheese by sprinkling it to the top, or you can mix a little organic fat free chicken broth to it. ( this is available at most stores) and if all else fails try some stonybrook yogurt ( organic) plain to it. I also used to add a little boiled chicken and rice.
Also Merricks makes a dry food " puppy plate" , you can serve it wet or add water and it makes its own gravy! hope this helps out with a few little tricks, one just may work
