Diamond Original vs Premium Dog Food: Which Formula Fits?
By UPCO Pet Supplies | Small Business Pet Shop in St. Joseph MO | Published: 2026-10-30
Category: Comparisons
Diamond Original and Diamond Premium are both 50 lb formulas, but they target different activity levels. Compare fat, protein, and price to choose the right bag for your dog.
Quick answer
Choose Diamond Original Dog Food 50 lb for a moderately active or sporting dog in the off-season. Choose Diamond Premium Dog Food 50 lb for a working, show, hunting, or breeding dog that needs higher protein and fat. The right bag depends on your dog's daily workload, not on which bag costs more.
The real divide is activity level, not bag size
Both formulas come in the same 50 lb bag, so the decision comes down to how much energy your dog burns. Diamond markets Original for moderately active dogs and sporting dogs during their off-season, and Premium for working, show, hunting, and breeding dogs. That is a meaningful split: an off-season hunting dog and a dog in the field every weekend have different calorie needs.
Protein and fat: what the catalog does and does not tell you
The catalog states that Diamond Premium has proper levels of fat and protein and that its high-quality protein sources support strong muscles. It does not list exact percentages for either formula, so you cannot compare them gram for gram from the bag description alone. If your dog has a health condition that requires a specific protein or fat level, check the guaranteed analysis on the physical bag or ask your veterinarian before switching.
Price per bag versus cost per day
At the listed catalog prices, Diamond Original is USD 21.69 and Diamond Premium is USD 35.37 for the same 50 lb size. That gap looks large, but it is not the whole story. A dog that needs Premium's higher fat and protein may eat less of it to maintain condition, while a less active dog may gain weight on a richer formula. Match the formula to the dog first, then compare what you actually spend per month.
Where the two formulas overlap
Both are Diamond formulas sold in 50 lb bags, and both are available for local delivery or curb-side pickup when ordered online. Neither listing includes ingredient panels, calorie counts, or feeding charts, so you will need to read the bag for those details. The overlap means you are not choosing between a complete food and an incomplete one; you are choosing between two activity targets.
Trade-offs to weigh before you buy
- Lower price versus lower energy density: Diamond Original costs less per bag, but it is formulated for moderate activity. If your dog is in heavy training, you may need to feed more of it to maintain condition, which narrows the savings. Track your dog's body condition for the first few weeks rather than assuming the cheaper bag is the cheaper month.
- Higher protein and fat versus weight management: Diamond Premium is built for active, athletic dogs. A couch-companion dog or a senior with low activity may gain weight on a richer formula, so portion control becomes more important. Ask your veterinarian for a target weight and adjust the scoop size accordingly.
- Seasonal switching versus one bag year-round: If your sporting dog is active in fall and idle in winter, you can feed Premium during the season and Original in the off-season. The trade-off is a transition period each time you switch. Transition over about a week by mixing increasing amounts of the new food with the old.
- Missing label details versus guessing: The catalog does not list protein or fat percentages, calorie content, or ingredient panels for either formula. Do not assume one is nutritionally complete for a specific medical need without checking the bag. Read the guaranteed analysis on the physical bag before committing to a 50 lb purchase.
Product facts at a glance
- Diamond Original Dog Food 50 lb: Formulated for moderately active dogs and sporting dogs during the off-season. This is the better fit for a dog that gets regular exercise but is not in peak training or competition.
Diamond Original Dog Food 50 lb - Diamond Premium Dog Food 50 lb: Specially designed for active, athletic dogs with proper levels of fat and protein. This formula is built for dogs with high daily energy demands, such as working or hunting dogs.
Diamond Premium Dog Food 50 lb - Diamond Original Dog Food 50 lb: Supplies consistent levels of vitamins, minerals, and energy plus omega fatty acids for healthy skin and a shiny coat. A steady nutrient profile helps you avoid abrupt changes in condition when your dog's activity level is stable.
- Diamond Premium Dog Food 50 lb: High-quality protein sources support strong muscles. Muscle support matters most for dogs that train, work, or compete regularly.
Which dog should get which bag?
Best for
- Diamond Original Dog Food 50 lb: moderately active dogs, sporting dogs in the off-season, and households watching the per-bag price
- Diamond Premium Dog Food 50 lb: working, show, hunting, and breeding dogs, and other active, athletic dogs with high daily energy demands
Not for
- Diamond Original: dogs in peak training, competition, or breeding that need a higher-energy formula
- Diamond Premium: low-activity dogs or seniors prone to weight gain, unless your veterinarian approves the higher fat and protein levels
