What is the best food for X-Large Breed dogs (mastiffs)?

we have a neapolitan mastiff. we feed her costco(kirkland) or walmart(ol'roy) brand food her crap aint too big and stinky....lol....that expensive stuff makes her crap stink and she dosent really like it....good luck...

I have an OEB and we feed her Nutrisource Large Breed. She likes it and it has no fillers in it so we dont have to feed her as much. That is the main concern with the large dogs. You just have to make sure that whatever food she gets hasnt got fillers.PS They dont poop as much either than which is a huge plus!

I personally feed the raw diet but it seems that a lot of mastiff breeders like to feed Eagle Pack Large and Giant Breed Puppy or Adult, either their regular or holistic lines. It is supposedly been tested for years by mastiff / great dane breeders w/ good results and they say it seems like in general, they didn't have as many growth related issues on this food.