Yes, dogs require additional vitamin intake at various points throughout their lives. Vitamins and minerals aid in the growth and development of pups and support the comfortable aging of senior dogs. Depending on your pet's age, breed, and state of health, their particular demands can change over time. Making sure your dog is consuming the right proportion of vital nutrients is a major part in being a responsible pet owner. Dogs can suffer when they are deficient in an important nutrient, just as people might feel lethargic or weak as a result of a vitamin deficiency. So always consult with your vet to determine what your dog needs.