I prefer kibble. Wet food is mainly just carbohydrates and water (I believe seventy percent). There is barely any protien in their at all. I also find that it makes the breath smell terrible. There are more chemicals and additives and usually contain sugar glycol or propylene (sp?) glycol; both of which can be deadly, so make sure that you read that ingredients. It also doesn't massage the gums like hard kibble does. My GSD was fed wet food for a few months, some years ago, and she got gingivitis and needs her teeth brushed every day or else it will turn into periodontitis (sp?) and her teeth will rot and fall out.

Soem for a treat is good; A dog loves that. But I say that unless the dog has trouble chewing, that kibble should make up the staple diet.