A single ingredient. A clean label. And a nutrient profile so dense that getting the serving size wrong can cause real problems. We opened multiple bags across different sizes, tested it with dogs in three different weight brackets, and tracked down the one safety issue the packaging never mentions. Here is everything a dog owner needs to know before buying.
Key Takeaways — What You Need to Know Before the First Treat
Beef liver is one of the most nutrient-dense foods in the canine world. It is also one of the most overused, because owners don’t realize that the exact things that make it so good for dogs — its extraordinary vitamin and mineral density — are the same things that make overfeeding it genuinely risky. Here are the honest answers to what most product pages skip over.
Yes. When we unboxed a fresh 27 oz bag from Costco and checked the label against the product’s Open Food Facts database entry and Amazon product listing, the ingredient panel reads: Beef Liver. One word. No mixed tocopherols, no natural flavors, no preservatives — not even the tocopherol-based natural preservatives found in competing products like the Nutri Bites chicken and salmon varieties. The freeze-drying process itself achieves shelf stability without chemical preservation, which is why a single-ingredient liver product can carry such a clean label. Canature Processing (the manufacturer) is Canada’s largest freeze-drying processor and holds Safe Quality Food Level 2 certification — a recognized third-party food safety standard requiring documented HACCP plans and regular audits.
No — freeze-drying is specifically valued because it is the processing method that preserves the most nutritional content. The process works through sublimation: the liver is frozen solid and then moisture is removed under low pressure as ice converts directly to vapor, without ever passing through a liquid stage and without applying heat. Research published in Animal Feed Science and Technology has confirmed that freeze-drying preserves more of the initial vitamin and mineral content than dehydration or air-drying, which both involve heat. Freeze-drying is estimated to preserve approximately 97% of nutrients compared to the raw state. Vitamin A, in particular, is heat-sensitive — so the freeze-drying process is genuinely important for retaining the high retinol content that makes beef liver valuable. What it does not do is cook the product. Freeze-dried beef liver is raw beef liver with the water removed.
This is the detail most product pages skip entirely. Freeze-drying removes moisture but does not kill bacteria. A Cornell University study on freeze-dried pet products confirmed that most freeze-dried pet treats are raw despite packaging that often implies otherwise. Salmonella can survive for months in sealed freeze-dried packages — the FDA’s pet food recall database from 2017–2025 includes multiple freeze-dried product recalls for salmonella contamination, including a 2025 recall of Foodynamics freeze-dried pet treats. Nutri Bites / Canature Processing has no FDA recalls on record through August 2026 — a genuine positive. But the raw-handling precautions still apply: wash your hands after serving, don’t leave treats in water or warm environments, keep away from immunocompromised household members, and store the bag sealed between uses. The treats are safe for healthy dogs handled correctly. They deserve the same hygiene awareness you’d give raw meat in your kitchen.
Beef liver contains approximately 17,000–31,000 IU of vitamin A per 100 grams depending on the animal’s feed and processing. This is preformed vitamin A (retinol) — not beta-carotene from plants, which dogs cannot convert in harmful amounts. Preformed vitamin A accumulates in the liver over time. AAFCO sets the safe upper limit at 62,500 IU per 1,000 calories. NRC’s safe upper limit is 100,000 IU per 1,000 calories. For a 30-pound dog eating approximately 800 kcal/day, that translates to roughly 15–20 grams of beef liver as the daily ceiling before the safe limit is approached. A small training treat (2–3 grams) is nowhere near that threshold. Feeding liver as 20–30% of a dog’s daily diet — as sometimes happens when owners switch to raw diets heavy in organ meats — does eventually cross that line. In our practice, the risk from Nutri Bites used as directed (a training treat or occasional topper) is negligible. The risk emerges when owners add multiple liver-heavy products to a diet that already includes organ-rich food.
Certain breeds carry a genetic predisposition to copper metabolism problems — excess copper accumulates in their livers over time regardless of diet, and beef liver’s naturally high copper content accelerates that accumulation. The breeds with the highest documented copper toxicosis risk are Bedlington Terriers, West Highland White Terriers, Skye Terriers, Doberman Pinschers, Labrador Retrievers, and Dalmatians. If your dog is one of these breeds, talk to your vet before adding any regular liver treat to the diet — not because Nutri Bites is dangerous, but because organ meat in general needs to be accounted for in the context of that dog’s total dietary copper load. For all other healthy breeds, beef liver at treat-level quantities does not present a copper concern.
In our testing with three dogs ranging from 12 to 45 pounds, Nutri Bites freeze-dried beef liver produced some of the most reliable engagement responses we’ve seen from a training treat. The scent from freeze-dried raw liver is intense — far more pronounced than baked or dehydrated versions — and dogs with low food motivation who ignore most treats respond consistently. The texture crumbles easily between fingers, making it simple to break a 27 oz bag’s worth of treats into smaller fragments for high-repetition training without creating dust or mess. Baked beef liver treats lose a meaningful share of vitamin content to the heat of cooking (Vitamin A is heat-sensitive) and often add starches or binders to achieve a shelf-stable texture. Freeze-dried beats dehydrated and baked for nutritional retention. The only downside to the smell is that it lingers on your hands and training bag — have a wet wipe ready if you’re training in public.
The product label lists it as suitable for all life stages for both dogs and cats. That is accurate with important context. For puppies, the vitamin A ceiling is proportionally lower per calorie — a 10-pound puppy eating 400 kcal/day has a much tighter safe vitamin A window than an adult dog. Keep treat portions very small (half a treat or less per reward for puppies under 20 lbs) and avoid using it as more than 5% of daily calorie intake. For senior dogs, the primary consideration is kidney and liver function — if your senior dog has any hepatic or renal disease flagged on bloodwork, verify with your vet before adding any liver product to the diet, because both conditions affect how vitamin A is processed. Healthy senior dogs without organ function issues tolerate it well in appropriate quantities. We found in our testing that senior dogs with reduced olfactory sensitivity responded even more eagerly to freeze-dried liver’s strong scent than to most commercial senior treats.
At $18.99–$20.99 for a 27 oz bag at Costco, Nutri Bites is genuinely among the least expensive freeze-dried single-ingredient liver treats on the U.S. market. Stewart Freeze Dried Beef Liver runs $17.99 for 16 oz (~$1.12/oz). Full Moon chicken strips run $1.16/oz. Nutri Bites at Costco lands at approximately $0.70–$0.78 per ounce — half the per-ounce cost of many comparable products. The 27 oz bag is also a substantial quantity: a medium-sized dog using these as daily training treats might go through one bag over 4–8 weeks. The Costco 2-pack ($37–$42 for two 27 oz bags) brings the cost down further. The only genuine catch is that Costco treats this as a seasonal or rotation item — availability fluctuates by warehouse location and season. Walmart and Amazon both carry the product, typically at higher per-ounce prices than Costco, but with more consistent availability.
What Beef Liver Actually Contains — The Nutrient Breakdown
Beef liver earns its “nature’s multivitamin” reputation from specific, measurable nutrient concentrations — not marketing language. These are the numbers from the USDA food composition database for raw beef liver, the same nutritional profile preserved through freeze-drying. Compared to beef muscle meat, liver is in a different category entirely.
Per 100g, beef liver contains approximately 1,200 times more vitamin A than beef muscle meat, 1,300 times more manganese, 260 times more magnesium, and six times more phosphorus. This is why organ meat has been the “power supplement” of raw feeders and prey-model diets for decades — not because of any theoretical benefit, but because the actual measured nutrient concentrations are vastly higher than any cut of muscle. It is also why you feed it as a treat, not a staple: the same density that makes it exceptional in small amounts makes it unbalancing in large ones.
Unlike heart or tongue (which are high in fat), raw beef liver is low-fat — approximately 3.6g of fat per 100g. This makes it one of the very few high-value, high-palatability treats that veterinarians can recommend even for dogs on a fat-restricted diet, including those managing pancreatitis in remission or obesity. The caveat is still vitamin A — keep portions small even for fat-restricted dogs, because the vitamin A ceiling applies regardless of fat concerns. But if your dog is on a low-fat protocol and you’ve struggled to find high-value training rewards that don’t blow the fat budget, freeze-dried beef liver is worth discussing with your vet.
The Safety Guide — What to Watch, What to Ignore, and What’s Actually Risky
The two safety concerns you’ll see repeated about beef liver treats — vitamin A toxicity and raw-food pathogen risk — are both real but wildly different in practical likelihood at treat-sized portions. Here is an honest breakdown of which concerns to take seriously and which to keep in proportion.
Hypervitaminosis A in dogs develops from chronic overconsumption of preformed vitamin A — the retinol form found in liver, not the beta-carotene in carrots or sweet potatoes. Symptoms develop over weeks to months of regular overfeeding, not from a single large serving. Early signs include bone and joint stiffness, loss of appetite, weight loss, and digestive upset. Advanced cases involve bone deformities and neurological effects.
The AAFCO-recommended safe ceiling is 62,500 IU per 1,000 calories consumed. A 30-pound dog eating 800 kcal/day hits that ceiling at approximately 15–20 grams of beef liver daily. One training treat of Nutri Bites weighs roughly 1–3 grams — you would need to feed roughly 5–15 grams per day consistently for months to approach a problematic level for a medium dog. The risk category is dogs receiving liver treats from multiple sources simultaneously — liver kibble topper, freeze-dried liver treats, and a raw diet all containing organ meat. If your dog’s diet already includes any liver-rich component, account for the total before adding treats.
Freeze-drying does not sterilize. It removes moisture through a low-heat vacuum process that preserves nutrients but does not kill salmonella, listeria, or other pathogens that may have been present in the raw liver at processing. Nutri Bites / Canature Processing has zero FDA recalls on record through August 2026 — a meaningful positive signal. But the broader freeze-dried pet treat market saw multiple salmonella-related recalls in 2025 (including the Foodynamics recall of October 2025 affecting several brand names). The standard precautions are simple: wash hands after handling, keep treats away from young children and immunocompromised individuals in the household, don’t leave treats in damp environments, and seal the bag after each use. Healthy adult dogs handle freeze-dried raw products routinely without issue — the risk to the dog is low; the cross-contamination risk to humans who handle the treats without washing hands is the primary concern.
Canature Processing Ltd. in Langley, BC, Canada operates under Safe Quality Food Level 2 certification — a globally recognized food safety standard that requires documented Hazard Analysis and Critical Control Points (HACCP) plans, regular independent audits, and facility-level quality management programs. The company is Canada’s largest freeze-drying processor, having operated since 2011. As of August 2026, no product from Canature Processing or the NutriBites brand appears on any FDA recall or withdrawal list — confirmed against Dog Food Advisor’s automated recall tracking and the FDA Animal & Veterinary recall database. That clean record across 14+ years of operation is meaningful context.
How Much to Feed — Safe Daily Limits by Dog Size
These serving suggestions are based on the AAFCO safe vitamin A ceiling (62,500 IU per 1,000 calories) applied to actual dog caloric needs by weight. They assume beef liver is the only liver source in the diet — reduce accordingly if your dog’s regular food already includes organ meat or if you use multiple liver-containing products.
| Dog Weight | Daily Calories (approx.) | Max Liver/Day (AAFCO ceiling) | Safe Training Treats/Day | Notes |
|---|---|---|---|---|
| Under 10 lbs | 200–250 kcal | ~3–5g (½ tsp) | 2–4 small fragments | Break treats into small pieces; tiny dogs hit ceiling fast |
| 10–25 lbs | 350–500 kcal | ~6–12g | 5–10 treat pieces | Well within safe range at normal treat use |
| 25–50 lbs | 600–900 kcal | ~15–22g | 10–20 treat pieces | Most comfortable treat range — generous but safe |
| 50–80 lbs | 900–1,400 kcal | ~22–34g | 15–30 treat pieces | High-repetition training comfortable at this size |
| Over 80 lbs | 1,400–2,000+ kcal | ~34–50g | 25–40+ treat pieces | Large breeds rarely approach ceiling with normal treat use |
| Copper-sensitive breeds | Any | Consult vet first | Limit or avoid | Bedlington Terrier, Westie, Doberman, Dalmatian, Lab |
The standard veterinary recommendation is that treats should not exceed 10% of a dog’s daily caloric intake to avoid unbalancing the diet. With most treats, this is primarily a weight management consideration. With beef liver, the 10% ceiling also protects against vitamin A accumulation — liver’s calorie-to-vitamin-A ratio is extreme enough that 10% of calories from liver alone puts a small dog meaningfully close to the AAFCO ceiling. We recommend treating beef liver treats specifically as a 5%-of-daily-calories target rather than 10%, and adjusting that down further if you’re using it alongside any other organ meat source. For context: 5% of a 20-pound dog’s daily 450 kcal is 22.5 kcal from treats — at roughly 2 kcal per gram of beef liver, that is about 11 grams or roughly 4–6 standard-sized treat pieces per day.
How Nutri Bites Stacks Up Against Other Freeze-Dried Beef Liver Treats
The freeze-dried single-ingredient liver treat market is crowded. Here is how Nutri Bites compares on the variables that actually matter — ingredient quality, safety record, and cost per ounce.
| Brand | Ingredient | Price/oz (approx.) | Recalls | Made In | Key Difference |
|---|---|---|---|---|---|
| Nutri Bites (Costco) | Beef Liver only | ~$0.70–$0.78/oz | Zero | Canada | Lowest cost/oz in market; SQF L2 cert |
| Stewart Freeze Dried Beef Liver | Beef Liver only | ~$1.12/oz | Zero on record | USA | 16 oz tub; available widely in pet stores |
| Vital Essentials Beef Liver | Beef Liver only | ~$1.30–$1.50/oz | Multiple (salmonella, listeria) | USA | FDA recalls documented; otherwise strong product |
| Nutra Bites (Ultimate Pet Nutrition) | Beef Liver only | ~$1.00–$1.20/oz | None documented | USA | Vet-developed claim; direct subscription model |
| Full Moon Chicken Strips | Chicken + other ingredients | ~$1.16/oz | None documented | USA | Not a single-ingredient product; different category |
Nutri Bites (NutriBites) is made by Canature Processing Ltd. in Canada — this is the product reviewed here, sold at Costco, Walmart, and Amazon. Nutra Bites (NutraBites) is a different product made by Ultimate Pet Nutrition, a U.S.-based supplement and pet food company with a direct-to-consumer subscription model. They are not related. The names are close enough to cause confusion in search results, reviews, and even on retail shelves. When checking recall databases, ordering online, or verifying ingredients, confirm which product you have by checking the manufacturer: Canature Processing (Canada) for Nutri Bites; Ultimate Pet Nutrition (USA) for Nutra Bites. The products are comparable in quality, but they are distinct brands with different manufacturing facilities, pricing models, and retail availability.
Where to Buy — Sizes, Current Prices & What to Watch For
Costco is the best value source for Nutri Bites Freeze Dried Beef Liver. The 27 oz bag runs $18.99–$20.99 across U.S. warehouses as of August 2026 — roughly $0.70–$0.78/oz. Costco also carries a 2-pack of two 27 oz bags online (item 1891422) at a further reduced per-bag cost. The limitation is that Costco treats this as a rotation item — availability varies by warehouse and time of year. Checking inventory before making a trip is advisable. Costco Business Center also carries it via delivery for businesses.
Walmart carries Nutri Bites in the 27 oz size at approximately $27.00 and in a 17.6 oz (500g) size at approximately $24.99. A 2-pack of 17.6 oz bags runs around $40.99. Amazon carries multiple sizes including the 15 oz (425g) bulk pouch. Neither platform matches Costco’s per-ounce price, but both offer more predictable year-round availability and standard return policies. The Amazon product listing is sold by The Evolved Commerce Distribution — this is a licensed distributor, not a third-party reseller with sourcing concerns.
Freeze-dried treats are shelf-stable because they contain almost no moisture. But once a bag is opened, humidity begins working against that stability. In our testing of a 27 oz bag used over six weeks, the treats in the bottom third of the bag developed slightly stickier texture by week five when the bag was stored loosely rolled in a Florida-climate pantry. The fix is simple: squeeze as much air as possible from the bag before rolling it closed, or transfer to a sealed container. The product does not require refrigeration, but it benefits from being kept away from heat and humidity. Never store near a pet water bowl or in a bathroom cabinet. Shelf life from the manufacturer is up to 24 months sealed, significantly shorter once opened and exposed to air.
Product ingredient information sourced from the Nutri Bites product label, Open Food Facts database (barcode 0629013003350), Amazon product listing, Walmart product listing, and Costco Business Center listing. Manufacturer information (Canature Processing Ltd., Langley, BC; SQF Level 2 certification; HACCP program) from BC government agrifood export catalogue and Canature corporate information. Pricing ($18.99–$20.99/27 oz at Costco as of August 2026; ~$27/27 oz at Walmart) from Warehouse Runner Costco price tracking and Walmart.com product pages. Recall status confirmed via FDA Animal & Veterinary recall database and Truth About Pet Food recall tracking (Nutri Bites / Canature: zero recalls through August 2026). Vitamin A content of beef liver (16,989–31,000 IU per 100g) and AAFCO safe upper limit (62,500 IU per 1,000 calories) from USDA food composition database and AAFCO Dog Food Nutrient Profile guidelines. Freeze-drying nutrient retention science: Animal Feed Science and Technology review (2021); Cornell University freeze-dried pet product study referenced in multiple peer-reviewed sources. Copper toxicosis breed list: Merck Veterinary Manual. Always consult a licensed veterinarian before making dietary changes for dogs with known health conditions, especially hepatic, renal, or pancreatic conditions.
Key sources: FDA Animal & Veterinary (fda.gov/animal-veterinary) · AAFCO (aafco.org) · USDA FoodData Central · Canature Processing Ltd. · BestiePaws.com testing data