When we tell you that you could be feeding a better quality food, we mean foods without by-products, corn, wheat, artificial colors, sugars (fructose, molasses), and/or chemical preservatives like ethoxyquin, BHT, and BHA (big NO NO!). Read the ingredients on your Eukanuba package and see how many "NO NOs" are in the food. Some good foods include Artemis, Blue Buffalo, Fromm Four Star, Innova (and other Natura products), Merrick, Natural Balance (N

, Nature's Variety, Orijen, Wellness, and many more. Basically, stay away from grocery store brands and don't listen to vets unless they know about nutrition (most don't, but get paid to advertise certain brands). Go to
www.dogfoodanalyses.com and look at the reviews for foods 4 stars and above, these are the foods you want to feed.
As for the food problem, I recommend keeping them on separate bowls and maybe add some boiled chicken or steamed to their food to make it more appealing to them. If you get them used to eating separately, you won't have to encounter this problem again.
Hope I helped!