
Tried it all... some intentionally, some unintentionally (in other words, when he knicked stuff like meat cooked and raw LOL). Any kind of animal protein - cooked or raw - causes dandruff and dull coat, though these days fortunately not behaviour problems anymore like it did when he was younger! I think he may also be sensitive to wheat, as there is only one vegetarian food (Benevo) that he is doing fine on and it's the only wheat free one. He also gets the Missing Link food supplement and coconut oil.
PS. The oldest dog ever (and possibly the currently oldest dog in the world too) were/are fed on a vegan diet. ;-)
PPS. I also have another dog with multiple allergies (in fact, he is allergic to almost everything including most meats) and he is on a raw diet, but even raw he can only handle certain types of meat, though he is ok with veg and fruit (but is also sensitive to rice and cereals in general). Complicated dogs I have... though luckily I also have a couple of "normal" ones that can eat everything and anything. LOL