My male bullmastiff used to have the same acne and ear problem. We spent a fortune on antibiotics, ear drops and cleanings, a steroid powder for his ears (that I referred to as powdered gold because of the cost) and vet bills. It was his food. There are so many "bad" foods out there for these guys. Steer clear of any food containing corn, wheat, or soy. These filler ingredients are known allergens that pet food companies add to bulk up the bag. You think you're getting a bargain buying a large bag for next to nothing, but you have to feed more to give your dog any nutritional value at all. You'll notice when you feed a good quality food that you don't have to feed quite so much because you aren't feeding junk that your dog won't digest. We've been feeding Life's Abundance for several years because of allergies our dogs had and haven't had a problem. We'll see how Mabel does on it. So far, after a week, she's OK, but we're watching her closely. My daughter's dog is allergic to most foods, including ours and feeds Blue Basics, which is where I'll go if Mabel develops problems on Life's Abundance.
There is a good video on my website about selecting a good food and what to look for on the pet food labels. It's obviously geared toward our food, but as long as it helps you find a good food for your dog--no matter where you decide to get it, I recommend the video.
http://www.petsnaturalchoice.net Please understand that I'm not trying to sell you food! I think that the video (which is available under the dog food tab) helps us learn to read labels, which is the best thing you can do to help you choose a quality food. You'd be amazed and appalled at what the big companies (and even some small ones) put in their products and where they get their ingredients.

You'd be even more shocked at how little nutritional training our veterinarians get! We owe it to our dogs to do our homework.
