Nutritional requirements change throughout a dog's life, and feeding inappropriate life stage foods causes preventable health and welfare problems.
Life stage appropriate nutrition prevents developmental, metabolic, and age-related disease that causes significant welfare harm. Large breed puppy nutrition is particularly critical as overfeeding or inappropriate calcium levels accelerate growth in ways that damage developing joints. Senior nutrition supports organ health as kidney and liver function decline. Feeding dogs amounts appropriate to their actual activity level prevents the obesity that causes chronic pain and reduced lifespan.