20 Best Foods for Dogs on a Diet 🐾

🔑 Key Takeaways

  • Can I feed fewer scoops of regular kibble? ❌ No. Nutrient deficiencies are a real risk.
  • Is high protein really necessary? ✅ Yes. It preserves lean muscle during fat loss.
  • What about fresh foods? 🥕 If done right, they’re gold. But portion control is non-negotiable.
  • Are boutique brands better than vet diets? ⚠️ Not usually. Science > marketing.
  • Do treats have to stop completely? 😇 No. But they must fit the 10% rule and offer satiety.

🧬 “My dog’s losing fat—but is it also losing muscle?”

Dogs on a diet need more than fewer calories—they need a strategy that spares lean body mass. The key driver? High protein content.

🦴 Nutrient✅ Target Level (Dry Matter)🎯 Why It Matters
Protein≥ 25%Preserves muscle, supports metabolism, increases satiety
Fat≤ 10%Reduces calorie density; excess causes energy surplus
Fiber≥ 12%Adds bulk without calories, reduces begging behavior
Carbohydrates≤ 40%Lowers insulin spikes, improves fat metabolism

🔍 What to watch: If weight is dropping too fast or your dog seems weak, it may be losing muscle. That’s a red flag.


🥩 “Which of these foods actually fills my dog up?”

Not all “low-calorie” foods satisfy hunger. Below are clinically supportive whole foods and commercial diets ranked by satiety, not marketing claims.

📊 Top Foods Ranked by Fullness Factor 🐶

#🐕 Food📈 Satiety Boost🍴 Notes
1Royal Canin Satiety Support⭐⭐⭐⭐⭐Highest fiber, clinical backing
2Pumpkin (pure)⭐⭐⭐⭐Soluble fiber + GI support
3Green Beans⭐⭐⭐⭐Crunchy + adds meal volume
4Lean Chicken Breast⭐⭐⭐High-protein topper, low-fat
5Blue Buffalo Healthy Weight⭐⭐⭐High in both protein + fiber
6Cottage Cheese (low-fat)⭐⭐Palatable, portion with care
7Apples (no seeds)⭐⭐Crunchy, fibrous snack
8Carrots⭐⭐Low-calorie treat alternative
9Purina Pro Plan OM⭐⭐Effective when strictly portioned
10Ollie / Farmer’s DogFresh + pre-portioned = reduced guesswork

💡 Insider Tip: Fiber + protein = satiety. Aim to combine both in every meal and treat.


📏 “I use a measuring cup—isn’t that enough?”

Nope. Measuring cups are often the #1 sabotage tool in a dog’s weight-loss journey.

📊 Volume vs. Weight: Why Grams Win Every Time

🧪 Method🔍 Accuracy⚠️ Risk of Error
Measuring cup❌ Low20–30% overfeeding common
Eyeballing❌ Very lowTotally inconsistent
Digital gram scale✅ HighPrecise down to 1–2 calories

🎯 Tip: Weigh both meals and treats. Even baby carrots add up.


💧 “Does water actually help my dog lose weight?”

Yes—and it’s often overlooked. Hydration is critical for fat metabolism and fiber function.

📊 Water Intake by Body Weight 🥤

🐶 Weight💧 Daily Water Target
10 lbs~10 oz
30 lbs~30 oz
50 lbs~50 oz
75 lbs~75 oz
100 lbs~100 oz

⚠️ Warning: High-fiber diets without enough water can cause constipation. Always offer fresh water—and consider adding moisture via wet food or broth.


🧪 “Is it dangerous to just feed less of my current food?”

Very. Most adult maintenance diets aren’t designed to be nutritionally complete when reduced.

📊 The Deficiency Risk of Undereating Maintenance Food 🛑

⚠️ Nutrient🧬 Risk When Restricting
ProteinMuscle loss, poor healing
Vitamins A, D, ESkin/immune dysfunction
Calcium & PhosphorusBone loss, weakness
CholineLiver dysfunction

👩‍⚕️ Vet-Only Fix: Choose a formulated weight-loss diet verified to meet all AAFCO standards at the reduced calorie level.


🍬 “Can I still give treats?”

Yes—but smartly. You get a 10% calorie budget for extras. Use it for treats that support satiety, not sabotage it.

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📊 Top 5 Clinical Treat Swaps 🍪

🍪 Instead of This✅ Try This
Milk bones🥕 Raw carrots
Cheese cubes🍗 Boiled chicken slivers
Bacon bits🎃 Pumpkin in silicone mold
Table scraps🐟 Steamed whitefish bites
Dental sticks (high-cal)🍏 Sliced apples (no seeds)

💡 Pro Tip: Freeze plain pumpkin in ice cube trays for a long-lasting, low-calorie chew.


🧠 “Why does my dog still beg—even with diet food?”

Begging is a learned behavior, not just hunger. Diets rich in protein and fiber reduce true hunger, but you may need to retrain your dog’s expectations.

📊 Behavioral Fixes for Begging Habits 🧠

🐾 Strategy🛠️ Description
Timed feedingsFeed at consistent hours only
Ignore beggingNever reward whining with food
Use puzzlesFeed meals in slow-feeder bowls or toys
Engage the brainTry treat balls with green beans inside
Replace the rewardSwap food rewards with walks or play

🎯 Trainer Tip: Begging is reinforced by attention—even negative attention. Stay neutral and redirect.


🛑 “Is it possible to make my dog lose weight too fast?”

Absolutely. Rapid weight loss risks muscle wasting, gallbladder disease, and even fatty liver.

📊 Healthy vs. Dangerous Weight Loss 🩺

📉 Weekly % Loss⚠️ Classification
1%✅ Safe
1.5–2%⚠️ Monitor
>3%❌ Too rapid
>10% per month🚨 Seek vet evaluation immediately

🧪 Rule of Thumb: Your vet should recheck weight every 2–4 weeks to guide pacing.


Final Summary: The 20 Best Foods, Ranked by Clinical Utility

#🥇 Food Name🧬 Benefit Category🧠 Key Note
1Royal Canin Satiety SupportVet TherapeuticBest fullness score
2Hill’s MetabolicVet TherapeuticMetabolism activation
3Purina OMVet TherapeuticLow fat + high protein
4Hill’s Science Diet PWOTC Science-BackedGreat value, high compliance
5Purina Pro Plan WMOTC Science-BackedStrong probiotic support
6Royal Canin Weight CareOTC Science-BackedBreed-specific options
7Eukanuba Fit BodyOTC Science-BackedLarge breed focus
8The Farmer’s DogFresh FoodPre-portioned, no guessing
9Blue Buffalo HWBoutiqueHigh protein, low fat
10Open Farm HWBoutiqueClean ingredients, traceability
11Chicken BreastWhole Food (Protein)Lean & satiating
12WhitefishWhole Food (Protein)Low fat, omega-3s
13Ground Turkey 93%Whole Food (Protein)Easy to prep
14EggWhole Food (Protein)Complete amino profile
15Nonfat YogurtWhole Food (Protein)Calcium + probiotics
16Green BeansWhole Food (Fiber)Meal extender
17Pumpkin PureeWhole Food (Fiber)Fills + improves digestion
18CarrotsWhole Food (Fiber)Crunchy, safe chew
19BlueberriesWhole Food (Fiber)Antioxidant-rich reward
20ApplesWhole Food (Fiber)Satisfying sweet treat

FAQs


🐾 Comment: “Is it safe to use fruits as treats for dogs on a weight-loss plan?”

Yes, but not all fruits are created equal—and portioning is critical. While certain fruits are packed with antioxidants and fiber that support satiety, others contain high sugar levels that can undermine your dog’s caloric deficit and even trigger glycemic spikes in sensitive dogs (especially those with metabolic disease or insulin resistance).

📊 Fruit Treats: Ranked by Clinical Suitability 🍎

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🍓 Fruit✅ Use For Dieting?🧬 Why (or Why Not)
Blueberries✅ ExcellentHigh in antioxidants, low sugar, small size = ideal training treat
Apples (no seeds)✅ GoodCrunchy, fibrous, moderate sugar — best given sliced and portion-controlled
Bananas⚠️ LimitedHigh potassium, but too sugary for regular use in overweight dogs
Grapes❌ NeverHighly toxic — even small amounts can cause kidney failure
Watermelon (seedless)✅ OccasionalHydrating and low-cal, but must remove seeds and rind

💡 Pro Feeding Tip: Always subtract the calories of fruit treats from the 10% daily treat allowance. One slice of apple? ~15–20 kcal. It adds up.


🍖 Comment: “Can I replace kibble entirely with fresh food like boiled meat and veggies?”

No—unless that fresh food is formulated by a board-certified veterinary nutritionist. The risk lies in nutritional gaps. Simply mixing lean meats and vegetables may lack essential micronutrients like taurine, zinc, iodine, vitamin D, and balanced calcium-to-phosphorus ratios.

📊 Homemade Meals: Nutritional Risk Breakdown ⚠️

🚫 Risk🧪 Deficiency Result
No calcium sourceBone demineralization, skeletal issues
No omega-3 balancePoor coat, chronic inflammation
Excess phosphorus from meatsKidney strain, mineral imbalance
Lack of B vitaminsNeurological dysfunction
Unbalanced energy densityFat gain or dangerous lean mass loss

💬 Expert Guidance: If fresh feeding is your goal, request a customized recipe from a certified veterinary nutritionist. DIY without guidance is like flying without instruments.


🧠 Comment: “Why is my dog still begging after switching to a vet-formulated weight loss diet?”

Begging isn’t always driven by hunger. Often, it’s a conditioned behavior reinforced by routine handouts, emotional energy, or boredom. Even when physical hunger is well-managed via high protein and fiber intake, mental hunger patterns persist.

📊 Begging Triggers & Clinical Solutions 🐕‍🦺

🔁 Trigger🧩 Root Cause🛠️ Clinical Behavior Fix
Feeding on-demandConditioned responseSwitch to scheduled mealtimes only
Attention-seekingReinforced by treatsReplace reward with play or praise
AnxietyEmotional associationTry enrichment toys or anxiety wraps
InactivityBoredomDaily walks, puzzle feeders, sniff work

🔄 Behavioral Reconditioning Tip: Use positive reinforcement only when your dog is calm and not begging. Reward silence and patience—not the whine.


📏 Comment: “Can I just give half the amount of my dog’s current adult maintenance food?”

No—and here’s why it’s medically unsound. Reducing the quantity of maintenance food without switching to a weight-loss-specific formula lowers caloric intake but also reduces essential nutrient intake, creating a proportional deficiency.

📊 Nutrient Drop When Halving Regular Kibble 🍽️

🔬 Nutrient🛑 Danger if Cut Too Low
ProteinMuscle atrophy, poor immune response
CholineLiver dysfunction, cognitive decline
Vitamin DSkeletal demineralization
ZincSkin lesions, reproductive issues
CalciumOsteopenia, growth problems in juveniles

🎯 Clinical Takeaway: Caloric restriction must come from a food formulated to deliver full nutrients at a reduced energy load—not simply less volume of the same meal.


💧 Comment: “Do dogs drink more or less on a high-protein weight loss diet?”

Typically more—especially if fed dry kibble with elevated protein and fiber levels. High-protein intake increases nitrogenous waste products like urea, which require increased fluid excretion. Simultaneously, dietary fiber draws water into the intestines to facilitate motility and satiety signaling.

📊 Hydration Needs on Weight-Loss Diets 🚰

💊 Diet Type💦 Water Demand🔍 Why It Matters
High protein, dry kibble↑↑More renal clearance needed
High-fiber dry dietPrevents constipation
Wet/fresh dietsMoisture content compensates
Homemade cooked foodMay vary; depends on moisture in recipe

💡 Tip: Encourage fluid intake by adding warm, low-sodium broth to dry meals or offering an ice cube made of pumpkin or carrot water as a hydration snack.

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📦 Comment: “Are boutique or grain-free diets better for weight loss?”

Not necessarily—and often worse. Many boutique formulas marketed as “natural” or “grain-free” prioritize label appeal over clinical efficacy. These diets may exceed recommended fat percentages, lack adequate fiber, or rely heavily on calorie-dense ingredients like potatoes and legumes.

📊 Boutique vs. Clinical Diets for Weight Loss 🧪

🛍️ Boutique Diets👩‍⚕️ Clinical Vet Diets
Often high-fat (12–18%)Fat kept ≤10% for energy control
Marketing-led formulationsData-backed, trial-tested recipes
Ingredient-focusedOutcome-focused (fat loss + LBM retention)
Unregulated health claimsOften prescription-based, vet-supervised
Grain-free often unnecessaryIncludes digestible, beneficial grains

📣 Myth Buster: Grain-free ≠ low-calorie. In fact, grain-free diets often contain more starch-based carbs than traditional formulas.


🐾 Comment: “What if my dog has arthritis and needs to lose weight too?”

This is a dual-diagnosis case—and it must be approached synergistically. Weight reduction is the single most effective intervention for managing arthritis, as excess body weight directly worsens joint loading. However, inflammation and pain can limit movement, making caloric burn difficult.

📊 Dual Strategy: Joint Health + Weight Loss 🦴

🔧 Solution🧬 Function
Omega-3s (EPA/DHA)Anti-inflammatory, joint lubrication
High-protein dietMuscle support for joint stability
Controlled caloric deficitLess joint strain, slower disease progression
L-carnitinePromotes fat metabolism + mobility
Joint supplements (glucosamine/chondroitin)Cartilage support, pain reduction

💡 Mobility Tip: Try low-impact exercises like underwater treadmill sessions, which allow calorie burn without pressure on inflamed joints.


🐶 Comment: “What’s the best protein option if my dog has a chicken allergy and still needs to lose weight?”

Look to novel or lean alternative proteins that offer high bioavailability but low fat content. Chicken-free doesn’t mean nutrition-deficient—options like whitefish, venison, or turkey breast can fulfill protein needs without triggering allergies.

📊 Top Chicken-Free Proteins for Weight Loss 🐾

🍖 Protein✅ Ideal for Weight Loss?🩺 Allergy-Friendly?🔍 Key Benefits
Whitefish (cod, haddock)✅ Very lean✅ HypoallergenicOmega-3s, low fat, highly digestible
Venison✅ Moderate fat✅ Novel proteinExcellent for food sensitivities
Turkey breast (no skin)✅ Extremely lean⚠️ CautionSafer than chicken but still poultry
Kangaroo✅ Premium choice✅ Rare allergenExtremely lean, rich in iron
Plant-based (pea/lentil)⚠️ Partial⚠️ Digestibility variesCan lack essential amino acids

💡 Pro Tip: If using OTC limited-ingredient diets, check for hidden chicken fat or poultry meal in the fine print—many “non-chicken” kibbles still sneak it in.


🍗 Comment: “Can I feed boiled chicken and green beans only until my dog loses weight?”

Absolutely not—this is a textbook case of nutrient starvation despite calorie control. While the combo is lean and low in calories, it lacks essential micronutrients, fatty acids, and amino acid diversity. Over time, this approach can lead to clinical malnutrition, including muscle wasting, metabolic imbalances, and immune compromise.

📊 What’s Missing in the Chicken + Green Bean Diet? ⚠️

🔍 Nutrient❌ Deficiency Consequences
CalciumBone demineralization, fractures
Vitamin DMuscle weakness, rickets
Omega-3sInflammation, poor skin/coat
Zinc & CopperHair loss, immune suppression
TaurineCardiomyopathy risk
B vitaminsNeurological dysfunction

💬 Solution: Use chicken + beans as additions to a balanced veterinary diet, never as the sole meal plan.


⚖️ Comment: “How fast should my dog lose weight? I don’t want her to get sick.”

The safest and most sustainable rate is 1–2% of total body weight per week. Going faster can result in lean muscle loss, nutritional deficiencies, or metabolic slowdown. For example, a 50-lb dog should aim to lose 0.5 to 1 lb per week.

📊 Healthy Weight Loss Timeline ⏳

🐕 Starting Weight🔽 Weekly Goal (1–2%)📅 Expected Time (for 15% loss)
20 lbs0.2–0.4 lbs6–10 weeks
40 lbs0.4–0.8 lbs8–12 weeks
60 lbs0.6–1.2 lbs10–16 weeks
80 lbs0.8–1.6 lbs12–20 weeks

📈 Tip: Track weekly weight with the same calibrated scale, under consistent conditions (e.g., same time of day, post-potty, pre-meal).


🛑 Comment: “Can I mix weight-loss kibble with regular food to save money?”

Mixing defeats the purpose of a precision-controlled diet. Weight-loss kibbles are engineered to deliver complete nutrition at a caloric deficit. Diluting that with regular adult maintenance kibble raises fat, calories, and carbohydrate levels—negating the clinical formula.

📊 What Happens When You Mix Formulas ❌

⚗️ Mixture🚫 Clinical Outcome
Weight-loss kibble + regular kibbleHigher caloric density, slower or reversed weight loss
Therapeutic + human food scrapsLoss of nutrient balance, increased begging
Weight-control + puppy foodRisk of nutrient imbalance, GI upset, weight gain

💡 Budget Tip: Ask your vet about non-prescription but science-based OTC weight diets like Hill’s Science Diet Perfect Weight or Purina Pro Plan Weight Management. They’re more affordable and still effective.


🥕 Comment: “My dog won’t eat the prescription weight-loss food. What now?”

Palatability matters—but never switch impulsively. Dogs often need a gradual transition period (7–10 days) and may resist due to smell, texture, or anxiety around food changes. There are safe strategies to improve acceptance.

📊 Palatability Rescue Plan 🧠

🧪 Strategy🍽️ Method
Warm it slightlyEnhances aroma and flavor
Add warm, low-sodium brothBoosts smell and taste appeal
Mix in spoonful of pumpkin or plain Greek yogurtAdds texture and flavor safely
Use puzzle feedersMakes eating stimulating and slower
Gradual mix-in with old food25% new, increasing daily

⚠️ Avoid: Gravy packets, bacon grease, cheese, or peanut butter—these can sabotage caloric control instantly.


🧪 Comment: “Is there a risk of gallbladder or liver problems during weight loss?”

Yes—especially if the dog loses weight too rapidly. Sudden fat mobilization can overload the liver, particularly in breeds predisposed to hepatic lipidosis (like Miniature Schnauzers). Gallbladder issues may also emerge due to shifts in bile metabolism.

📊 Risks of Rapid Weight Loss 🧬

💣 Risk🐕 Clinical Concern
Hepatic lipidosisFat accumulation in liver impairs function
Muscle wastingRapid drop in lean mass affects strength
Immune suppressionNutrient imbalance reduces defense
Gallbladder sludgeCan progress to obstruction or rupture

💬 Vet Rule of Thumb: Never restrict calories below Resting Energy Requirement (RER) without veterinary supervision.


💊 Comment: “What supplements actually help with weight loss?”

Only a few have credible veterinary support. Most OTC “weight loss” dog supplements are unregulated, poorly studied, or irrelevant. However, a few have valid metabolic or satiety-enhancing roles.

📊 Evidence-Supported Supplements for Canine Weight Loss 💊

🌿 Supplement🔍 Function
L-carnitinePromotes fat oxidation, preserves lean mass
Omega-3s (EPA/DHA)Reduces inflammation, improves joint comfort
Soluble fiber blends (psyllium, beet pulp)Enhances satiety, supports gut health
Glucosamine + chondroitinAids mobility during exercise
Probiotics (e.g., Enterococcus faecium)Improves digestion and nutrient absorption

💬 Avoid: “Fat burner” supplements marketed for pets—these lack clinical backing and may be harmful.


🧠 Comment: “What should I do if my dog’s weight isn’t budging even though I’m following the feeding guidelines exactly?”

Stalled weight loss is often due to subtle miscalculations, metabolic adaptation, or insufficient activity—not disobedience or diet failure. Dogs in caloric deficit should lose weight consistently. When that stops, a structured re-evaluation is essential.

📊 Why Weight Loss Plateaus Happen 🐾

⚠️ Cause🧪 Explanation✅ What To Do
Over-measuring foodMeasuring cups can overfeed by 20–30%Use a gram scale for precision
Metabolic adaptationBody burns fewer calories as weight dropsRecalculate calories at new weight
Hidden treats/snacksChews, dental bones, “bites” add upTrack every bite—log with an app
Too little activityDiet alone can’t sustain loss long-termIntroduce short daily walks or food puzzles
Loss of muscle massMuscle loss slows basal metabolismEnsure adequate protein intake

💡 Pro Tip: If your dog hasn’t lost weight in 2–3 consecutive weeks, consult your vet to update the plan.


🏃‍♂️ Comment: “Can I help my dog lose weight just by increasing exercise?”

No—exercise alone rarely creates a large enough calorie deficit for meaningful weight loss. It’s a powerful adjunct, not a standalone strategy. In fact, a brisk 30-minute walk burns roughly only 50–70 calories for an average 40-lb dog, while one Milk-Bone treat can contain 35–50 calories.

📊 Exercise vs. Calories Burned: The Harsh Truth 🐕‍🦺

🏋️ Activity⏱️ Duration🔥 Calories Burned
Leisure walk20 mins~30–40 kcal
Brisk walk30 mins~50–70 kcal
Light fetch15 mins~30 kcal
Swimming20 mins~80–100 kcal
Agility course30 mins~90–120 kcal

⚠️ Don’t skip nutrition. A single tablespoon of peanut butter (~90 kcal) can cancel out an entire walk.


🍖 Comment: “Is raw food better for weight loss because it has fewer carbs?”

Not necessarily. While many raw diets are low in carbohydrates, that alone doesn’t make them weight-loss friendly. In fact, many raw and boutique diets are high in fat, which is more calorie-dense than either protein or carbs.

📊 Nutrient Density Comparison by Macronutrient 💡

🧪 Nutrient⚡ Calories per Gram🩺 Weight-Loss Role
Fat9 kcalEnergy-dense; limit to <10% DM
Protein4 kcalPreserves lean mass; prioritize
Carbohydrates4 kcalPrefer fiber-rich sources only

💡 Clinical Insight: Raw-fed dogs often consume unbalanced meals with untracked caloric loads, and many commercial raw diets haven’t undergone AAFCO feeding trials.

Veterinary nutritionists recommend therapeutic diets or carefully formulated cooked meals over raw options for precise weight control.


🍬 Comment: “Are fruits like bananas and watermelon okay for overweight dogs?”

Only in tiny, carefully portioned amounts. While fruit offers fiber and antioxidants, most are naturally high in sugar, which contributes to caloric load without much satiety. Still, they’re useful in micro-portions as “treat replacements.”

📊 Fruits Ranked by Weight-Loss Friendliness 🍎🍌

🍓 Fruit✅ Weight-Loss Safe?⚠️ Limitations
Blueberries✅ ExcellentLow sugar, high fiber
Apple (no seeds)✅ GoodHigh fiber, but sugary
Banana⚠️ OccasionallyVery sugary; ½ inch max
Watermelon⚠️ ModerationMostly water, but high GI
Grapes❌ NEVERToxic to dogs even in small amounts

🎯 Vet Tip: Use frozen blueberries or diced apple as high-value training rewards instead of calorie-dense commercial treats.


🔄 Comment: “Can I feed weight-loss food permanently, or do I need to switch back?”

You can continue feeding most veterinary weight-loss diets long-term with proper vet guidance, but not all are formulated for maintenance. Once the dog reaches ideal weight, the goal shifts from deficit to balance.

📊 What Happens After Weight Loss? 🧭

🐕 Status🍽️ Diet Needed🔄 Monitoring
Still losing weightTherapeutic dietContinue calorie tracking
At target weightSwitch to “weight maintenance” versionMonthly weigh-ins
Gaining againReintroduce stricter formulaAssess treats, activity

💬 Strategy: Brands like Hill’s Metabolic and Royal Canin Satiety have “transition protocols” that gradually shift dogs from weight-loss to maintenance without rebound gain.


📦 Comment: “My dog begs constantly. What else can I do besides just feeding more?”

Begging is a behavioral and physiological symptom—solve both to break the cycle. The right diet will reduce physical hunger, but strategic enrichment and feeding patterns tackle the emotional side.

📊 Anti-Begging Toolkit 🧠🐶

🎯 Strategy💡 Why It Works
Feed from puzzle toysSlows intake, adds mental engagement
Split meals into 3–4 portionsSpreads satiety cues throughout day
Frozen veggie “pupsicles”Zero-calorie satisfaction
Daily low-cal treat routine (same time)Builds predictable, reduced-expectation behavior
Ignore begging consistentlyReinforces extinction

✨ Bonus: Try green bean or carrot ice cubes with a tiny smear of canned food frozen inside—high novelty, low calories.

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