A. Grain Free diets are a very popular option these days and are formulated to try and fit a dogs "ancient" needs for diet. However, dogs are omnivores by nature, meaning that they will enjoy a diet of both meat and vegetables readily. Many owners choose to feed a grain free diet in order to avoid common allergenic grain products such as wheat, corn and soy products which can cause skin rashes, allergies and digestive upset. However, these grain free diets will often incorporate other food sources that are not grains such as peas and potatoes to provide for an omnivorous diet.
if you are feeding a commercial pet food that is complete and balanced (there should be an AAFCO statement somewhere on the bag that states this), then your dog should not need any vitamin supplements. However, if your dog is not doing well on his food, or appears to have some health issues such as cracked nails, scheduling an appointment with your vet is best. Your vet can check for any nutrient deficiencies and may recommend a change in food or a supplement to meet any holes in the diet.
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