Healthy animals eating a balanced canine diet do not necessarily need to take a daily vitamin although it should not harm your dog by offering one each day. There are a variety of supplements available for dogs as well, usually directed at a specific need. For example, many of our patients take glucosamine and chondroitin, supplements that promote healthy joints. Other supplements include amino acids and fish oils to promote overall health. We recommend consulting with a veterinarian before starting your dog on any type of supplement.