[Buddy]

Buddy will mainly only eat 'human' food aswell, but i do mix a handful of dry mix (called Burns mini bites, they are made by a vet in scotland and is fantastic when you look at the ingredients) I mix this in with either chicken, beef, liver etc and add a tiny bit of water so he doesnt seem to notice the dry bites are in with the human food. I do supplement him with a pet tab vitamin once a day though just to make sure and he absolutely loves goats milk. I have a cupboard full of unwanted/disliked dog food, boxes tins etc i bought the lot and he hated the lot...lol so in the end i gave up and he won with the human food, he has a very very healthy appetite!!!
My vet told me if the solely eat human food then yes they should definately have vitamin supplements.