Why large breeds are managed differently from small breeds
Large and giant breed dogs (roughly 25kg-plus as adults, like Labradors, German Shepherds, and Great Danes) go through a much longer and more dramatic growth phase than small breeds, and their bones and joints are more vulnerable to stress from excess weight or too-rapid growth during that window. Research has repeatedly linked fast early growth and excess calcium intake in large-breed puppies to higher rates of hip dysplasia, elbow dysplasia, and osteochondritis dissecans later in life.
Why large-breed puppy formula matters
Large-breed puppy foods are formulated with a controlled calcium-to-phosphorus ratio and a lower calorie density than regular puppy food, specifically to slow the growth rate to a healthier pace rather than restrict overall nutrition. Feeding a large-breed puppy standard puppy food, or worse, adult food, or supplementing with extra calcium "for strong bones," can unintentionally speed up growth or unbalance mineral ratios in ways linked to skeletal problems.
Measuring portions instead of free-feeding
Free-feeding (leaving food out all day) makes it easy for a large-breed puppy to overeat, contributing to excess growth speed and weight gain during a vulnerable developmental window. Measured meals, typically three to four times a day for young puppies, tapering to two by around six months, combined with regular weigh-ins let you track growth against a target curve rather than guessing.
Tracking growth rate with your vet
Your vet can plot your large-breed puppy's weight against expected growth curves for their breed at regular check-ups and adjust feeding amounts if growth is tracking too fast or too slow. This is more useful than a fixed feeding chart, since individual puppies within the same breed can still vary. Keeping your puppy at a lean body condition throughout growth, ribs easily felt, visible waist, is protective against orthopaedic problems.
What to avoid during the growth phase
Avoid calcium or vitamin D supplements unless specifically prescribed by your vet, avoid excessive high-impact exercise like repetitive jumping or long runs on hard surfaces before growth plates close, and avoid switching to adult food early in an attempt to slow growth, the large-breed puppy formula is designed to do that job safely already. If you're ever unsure whether your puppy's weight gain is on track, your vet's growth chart is the most reliable check.
It's worth resisting the temptation to compare your puppy's size and portions to other large-breed puppies of the same age, since individual growth rates vary even within a litter, the goal is a lean, steadily growing puppy on their own curve, not the biggest puppy in the park.
A visible waist and easily felt ribs throughout puppyhood are far better indicators of appropriate feeding than a target weight taken from a breed chart, since those charts describe averages rather than your individual dog's healthy frame.