You can choose a low grain based diet for your pet

According to numerous specialists, there are some dogs that suffer from various allergies caused by different ingredients and they should be fed without grains or maybe a low quantity. 

“Grains are carbohydrates which contribute calories and can lead to weight gain so I recommend a reduced carbohydrate diet, or in other words, a lower grain content. Bacteria produced by the gut are important for giving the immune system what it needs,” Morgan says.