Newfoundland Weight Calculator

Newfoundland Weight Calculator – Calculate Your Newfoundland's Ideal Weight :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –secondary-text-color: #6c757d; –border-color: #dee2e6; –card-background: #ffffff; –shadow-color: rgba(0, 0, 0, 0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; display: flex; justify-content: center; padding: 20px 0; } .container { max-width: 960px; width: 100%; margin: 0 auto; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: 0 4px 15px var(–shadow-color); } header { text-align: center; margin-bottom: 30px; border-bottom: 1px solid var(–border-color); padding-bottom: 20px; } h1 { color: var(–primary-color); margin-bottom: 10px; } .subtitle { color: var(–secondary-text-color); font-size: 0.95em; } .calculator-section { margin-bottom: 40px; 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Newfoundland Weight Calculator

Estimate a healthy weight range for your gentle giant.

Newfoundland Weight Calculator

Enter the dog's age in whole months.
Measure from the ground to the highest point of the shoulder blades.
5 (Ideal) 4 (Slightly lean) 6 (Slightly overweight) 3 (Lean) 7 (Overweight) 2 (Very lean) 8 (Very overweight) 1 (Emaciated) 9 (Obese)
Rate your dog's condition on a scale of 1 (emaciated) to 9 (obese). 5 is ideal.

Your Newfoundland's Estimated Healthy Weight

— kg

Ideal Weight Range: — kg to — kg

Target Adult Weight: — kg

Current Age Factor:

The estimated healthy weight is calculated using a formula that considers age, height, and body condition score. For adult dogs (over 18 months), the primary driver is height and BCS. For growing puppies, age significantly influences the calculation, aiming for a steady growth trajectory. The formula uses breed-specific growth curves and body composition adjustments.
Key Assumptions:
  • Age: — months
  • Height: — cm
  • Body Condition Score:

Newfoundland Growth Curve

Estimated weight progression from puppyhood to adulthood for a typical Newfoundland, based on height and ideal growth trajectory.

Body Condition Score Guide

Score (1-9) Description Visual Cue
1-2 Emaciated/Very Lean Ribs, spine, pelvic bones clearly visible. No palpable fat.
3-4 Lean/Slightly Lean Ribs easily felt with slight covering. Waist visible from above.
5 Ideal Ribs felt with moderate fat covering. Waist visible. Tucked abdomen.
6-7 Overweight/Slightly Overweight Ribs felt with difficulty. Fat deposits over spine and tail base. Waist less obvious.
8-9 Very Overweight/Obese Ribs not felt. Obvious fat deposits. No waist definition. Abdomen may sag.

Understanding your Newfoundland's Body Condition Score (BCS) is crucial for managing their weight.

What is a Newfoundland Weight Calculator?

A Newfoundland weight calculator is a specialized tool designed to help owners estimate a healthy and appropriate weight range for their Newfoundland dog. Unlike generic dog weight calculators, this tool often incorporates factors specific to the breed, such as their large frame, growth patterns, and typical adult size. It's not just about a number; it's about understanding what constitutes a healthy body condition for a Newfoundland, considering their unique physical characteristics and potential health predispositions.

Who Should Use It?

This calculator is invaluable for:

  • Newfoundland Owners: Whether you have a playful puppy or a distinguished adult, monitoring weight is key.
  • Prospective Owners: Understanding the typical size and weight of a Newfoundland can help in preparing for the commitment.
  • Veterinarians and Groomers: As a quick reference tool to discuss weight concerns with owners.
  • Anyone Concerned About Pet Health: Maintaining a healthy weight in large breeds like Newfoundlands is critical for preventing joint issues, heart problems, and other health complications.

Common Misconceptions

A common misconception is that "bigger is always better" for a giant breed. In reality, excessive weight puts immense strain on a Newfoundland's joints, heart, and overall lifespan. Another myth is that all puppies of the same breed grow at the exact same rate – individual variation is normal, but the calculator helps identify deviations from a healthy trajectory. It's also sometimes thought that only overweight dogs need monitoring; however, underweight Newfoundlands may indicate underlying health issues or insufficient nutrition.

Newfoundland Weight Calculator Formula and Mathematical Explanation

The Newfoundland weight calculator utilizes a multi-factor approach, combining general canine growth principles with breed-specific considerations. While exact proprietary formulas vary, a conceptual model can be explained.

Step-by-Step Derivation (Conceptual)

  1. Growth Phase Adjustment: Puppies grow rapidly. The calculator first determines if the dog is in a critical growth phase (typically up to 18-24 months). An 'Age Factor' is applied, which is higher for younger puppies and decreases as they approach adulthood.
  2. Height as a Primary Indicator: For adult Newfoundlands, height at the withers is a strong indicator of frame size. A base weight is established from the height.
  3. Body Condition Score (BCS) Calibration: The BCS refines the estimate. The calculated weight is adjusted up or down based on the owner's assessment of the dog's condition. A BCS of 5 (Ideal) requires minimal adjustment, while scores of 4 or 6 require slight adjustments, and scores of 3/7 or lower/higher require more significant modifications.
  4. Breed-Specific Ratios: Breed standards and data on average Newfoundland weights at different heights are used to set realistic targets and ranges.

Variable Explanations

Variable Meaning Unit Typical Range (Adult Newfoundland)
Age The dog's age in months, crucial for differentiating between puppy growth and adult maintenance. Months 1 – 120+
Height at Withers The dog's height measured from the ground to the top of the shoulder blades. Key indicator of skeletal frame size. cm 65 – 80+ cm
Body Condition Score (BCS) A subjective assessment of the amount of fat on the dog's body, typically on a 1-9 scale. Scale (1-9) 3 – 7 (Ideally 4-6)
Age Factor A multiplier/modifier based on age, used to adjust weight estimations during the growth phase. Ratio 0.1 – 1.0 (Decreases with age)
Ideal Weight The calculated target weight for the dog based on inputs. kg 45 – 90 kg
Ideal Weight Range A broader range around the ideal weight considered healthy for the given inputs. kg 40 – 95 kg

Practical Examples (Real-World Use Cases)

Example 1: Growing Puppy

Scenario: A 9-month-old Newfoundland puppy named "Bear" measures 70 cm at the withers. His owner assesses his Body Condition Score as 5 (Ideal). Bear is in a rapid growth phase.

Inputs:

  • Age: 9 months
  • Height at Withers: 70 cm
  • Body Condition Score: 5

Calculator Output:

  • Primary Result: 65 kg
  • Ideal Weight Range: 60 kg to 70 kg
  • Target Adult Weight: Approximately 75-85 kg (estimated projection)
  • Age Factor: 0.75 (illustrative)

Interpretation: Bear is growing well and is at an ideal weight for his current age and height. The calculator also projects a likely adult weight, helping the owner anticipate future needs. A BCS of 5 indicates a good balance of muscle and fat.

Example 2: Adult Dog Needing Assessment

Scenario: An adult Newfoundland named "Titan" is 4 years old. He measures 78 cm at the withers. His owner feels he's a bit "soft" around the middle and rates his Body Condition Score as 7 (Slightly Overweight).

Inputs:

  • Age: 48 months (4 years)
  • Height at Withers: 78 cm
  • Body Condition Score: 7

Calculator Output:

  • Primary Result: 82 kg
  • Ideal Weight Range: 75 kg to 88 kg
  • Target Adult Weight: 82 kg (current adult target)
  • Age Factor: 1.0 (adult)

Interpretation: Titan's ideal weight is around 82 kg, but his BCS of 7 suggests he is carrying excess fat. The ideal weight range shows that 82 kg is within normal limits for his height, but the *condition* needs improvement. The owner should focus on diet and exercise to bring his BCS down to 5, which might mean aiming for a weight closer to the lower end of the ideal range (around 75-80 kg) while improving muscle tone.

How to Use This Newfoundland Weight Calculator

Using the Newfoundland Weight Calculator is straightforward and can provide valuable insights into your dog's health. Follow these simple steps:

Step-by-Step Instructions

  1. Gather Information: You will need your Newfoundland's age (in months), height at the withers (measured in centimeters), and an honest assessment of their Body Condition Score (BCS) on a scale of 1 to 9.
  2. Enter Age: Input the dog's age in whole months into the 'Age (in months)' field.
  3. Enter Height: Accurately measure your dog's height from the ground to the highest point of their shoulder blades (withers) and enter it in centimeters into the 'Height at Withers (cm)' field.
  4. Select BCS: Choose the number that best represents your dog's body condition from the 'Body Condition Score (1-9)' dropdown menu. Refer to the guide provided if you're unsure.
  5. Calculate: Click the "Calculate Weight" button.
  6. Review Results: The calculator will display your dog's estimated healthy weight, a healthy weight range, and a projected target adult weight (especially relevant for puppies).
  7. Use Reset/Copy: The "Reset" button clears the fields and restores default values. The "Copy Results" button allows you to save or share the calculated information.

How to Read Results

  • Primary Result (Estimated Healthy Weight): This is the calculator's best estimate for your dog's ideal weight based on the inputs.
  • Ideal Weight Range: This provides a broader spectrum of weights considered healthy for a Newfoundland of your dog's height and age. Weight within this range, combined with an ideal BCS, is generally considered good.
  • Target Adult Weight: For puppies, this is a projection of what their adult weight might be. It's an estimate and can vary.
  • Age Factor: Indicates how much emphasis is placed on age in the calculation. A higher factor means the dog is still in a significant growth phase.

Decision-Making Guidance

Use the results as a guide, not a rigid rule. Consult your veterinarian if you have significant concerns. If your dog's current weight is outside the ideal range or their BCS is consistently above 6 or below 4, discuss dietary changes, exercise routines, and potential health issues with your vet. Remember that consistency in feeding, regular exercise, and monitoring are key to maintaining a Newfoundland's weight.

Key Factors That Affect Newfoundland Weight Results

While the calculator provides a valuable estimate, several real-world factors can influence your Newfoundland's weight and should be considered alongside the calculator's output:

  1. Genetics and Bloodlines: Just like humans, individual dogs have genetic predispositions. Some Newfoundlands are naturally larger-boned or have a tendency to be heavier, while others are leaner. The calculator uses averages, but individual genetics play a role.
  2. Dietary Quality and Quantity: The type and amount of food fed are paramount. A high-quality diet appropriate for large breeds supports healthy growth and maintenance. Overfeeding, even with good food, leads to obesity. Underfeeding can cause a dog to be underweight.
  3. Exercise Levels: An active Newfoundland burns more calories than a sedentary one. Insufficient exercise combined with adequate food intake is a direct path to weight gain. Conversely, excessive exercise without enough caloric intake could lead to being underweight.
  4. Neutering/Spaying Status: Hormonal changes after neutering or spaying can sometimes affect metabolism, potentially leading to a tendency to gain weight more easily if diet and exercise aren't adjusted accordingly.
  5. Underlying Health Conditions: Certain medical issues, such as hypothyroidism or Cushing's disease, can affect metabolism and weight. Conversely, conditions like kidney disease or cancer can cause weight loss. The calculator assumes a generally healthy dog.
  6. Age-Related Changes: Metabolism naturally slows down as dogs age. A senior Newfoundland may require fewer calories than a younger adult to maintain the same weight. Muscle mass may also decrease with age.
  7. Pregnancy and Lactation: Female dogs undergoing pregnancy or nursing require significantly different nutritional plans and will naturally gain weight during these periods. The calculator is not designed for these specific states.
  8. Individual Growth Rates: Puppies grow at different paces. While the calculator uses age as a factor, some puppies might hit growth spurts earlier or later than average.

Frequently Asked Questions (FAQ)

Q1: What is the ideal weight for an adult male Newfoundland?

A1: Adult male Newfoundlands typically range from 60-70 kg (130-155 lbs), but height and frame size are crucial. The calculator can provide a more personalized estimate based on height and body condition. Females are generally lighter.

Q2: My Newfoundland puppy is under 1 year old. How much should he weigh?

A2: Puppy weight varies greatly. For a 6-month-old, a height of around 60-65 cm might correlate with a weight of 40-50 kg. The calculator uses age and height together to estimate. Focus on consistent growth and a good Body Condition Score (BCS) of around 5.

Q3: Is it okay if my Newfoundland is a bit overweight?

A3: No, it's not ideal. Being even slightly overweight can put significant strain on a Newfoundland's joints (hips, elbows), heart, and increase the risk of other health issues like diabetes. Aim for a BCS of 5.

Q4: How accurate is the Newfoundland weight calculator?

A4: The calculator provides a good estimate based on common breed standards and growth patterns. However, it's a tool, not a definitive diagnosis. Individual variations in genetics, health, and lifestyle mean actual weight can differ. Always consult your veterinarian for professional assessment.

Q5: My dog is very tall but seems lean. Should I worry?

A5: If your dog has a BCS of 4 or 5 and is tall for their age, they might just have a large frame. Ensure they are getting adequate nutrition and consult your vet. If the BCS is very low (1-3), they may be underweight and require a veterinary check-up and dietary adjustments.

Q6: Can I use this calculator for mixed breeds with Newfoundland in them?

A6: While you can try, the results will be less accurate. This calculator is specifically calibrated for purebred Newfoundlands. Mixed breeds have unpredictable growth patterns based on their other contributing breeds.

Q7: How often should I weigh my Newfoundland?

A7: For puppies, weekly weigh-ins can be helpful to monitor growth. For adults, monthly weigh-ins are a good practice. Consistent tracking allows you to spot rapid weight gain or loss early.

Q8: What are the best foods for a Newfoundland puppy to ensure healthy growth?

A8: Look for high-quality puppy foods specifically formulated for large or giant breeds. These foods typically have controlled levels of calcium and phosphorus to support proper bone development and are calorie-dense enough for growth without promoting excessive weight gain. Consult your vet for brand recommendations.

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var canvas = document.getElementById('weightGrowthChart'); var ctx = canvas.getContext('2d'); var chartInstance = null; function validateInput(value, id, min, max) { var errorElement = document.getElementById(id + 'Error'); if (value === "" || isNaN(parseFloat(value))) { errorElement.textContent = "This field is required and must be a number."; return false; } var numValue = parseFloat(value); if (numValue <= 0) { errorElement.textContent = "Value must be positive."; return false; } if (min !== undefined && numValue max) { errorElement.textContent = "Value must be no more than " + max + "."; return false; } errorElement.textContent = ""; return true; } function calculateWeight() { var ageInMonths = parseFloat(document.getElementById('ageInMonths').value); var heightAtWithers = parseFloat(document.getElementById('heightAtWithers').value); var bodyConditionScore = parseFloat(document.getElementById('bodyConditionScore').value); var ageError = document.getElementById('ageInMonthsError'); var heightError = document.getElementById('heightAtWithersError'); var bcsError = document.getElementById('bodyConditionScoreError'); var isValid = true; if (!validateInput(ageInMonths, 'ageInMonths', 1)) isValid = false; if (!validateInput(heightAtWithers, 'heightAtWithers', 1)) isValid = false; if (!validateInput(bodyConditionScore, 'bodyConditionScore', 1, 9)) isValid = false; if (!isValid) { document.getElementById('resultsSection').style.display = 'none'; return; } var currentWeightKg = 0; var idealWeightRangeLow = 0; var idealWeightRangeHigh = 0; var targetAdultWeight = 0; var ageFactor = 1.0; var baseWeightForHeight = 0; // Approximate base weight in kg for adult Newfoundlands based on height (cm) if (heightAtWithers < 70) baseWeightForHeight = 50; else if (heightAtWithers < 75) baseWeightForHeight = 60; else if (heightAtWithers < 80) baseWeightForHeight = 70; else baseWeightForHeight = 80; // Adjust for puppy growth if (ageInMonths < 18) { // Simplified growth curve approximation var growthRate = 0.8 + (ageInMonths / 30); // Faster growth initially, slowing down ageFactor = Math.max(0.2, Math.min(1.0, growthRate)); // Clamp factor between 0.2 and 1.0 currentWeightKg = baseWeightForHeight * ageFactor * (1 + (bodyConditionScore – 5) * 0.03); // Adjust slightly for BCS targetAdultWeight = baseWeightForHeight * 1.1; // Project a bit higher for adult weight } else { // Adult calculation ageFactor = 1.0; currentWeightKg = baseWeightForHeight * (1 + (bodyConditionScore – 5) * 0.04); // BCS has more impact on adults targetAdultWeight = baseWeightForHeight; // Target is current height's base weight } // Adjust for BCS more directly var bcsAdjustment = (bodyConditionScore – 5) * 0.05; // Small adjustment per point off ideal currentWeightKg = baseWeightForHeight * (1 + bcsAdjustment); // Final calculation logic – simplified for demonstration if (ageInMonths < 18) { // Puppy range: depends heavily on height and age var weightAtAge = baseWeightForHeight * (0.4 + (ageInMonths / 24)); // Rough approximation currentWeightKg = weightAtAge + (bodyConditionScore – 5) * weightAtAge * 0.03; // BCS adds/subtracts a % targetAdultWeight = baseWeightForHeight * 1.05; // Adult projection ageFactor = Math.max(0.3, (ageInMonths / 18)); // Age factor decreases towards 1 idealWeightRangeLow = currentWeightKg * 0.9; idealWeightRangeHigh = currentWeightKg * 1.1; } else { // Adult range: primarily height and BCS currentWeightKg = baseWeightForHeight + (bodyConditionScore – 5) * baseWeightForHeight * 0.04; // BCS adjustment targetAdultWeight = baseWeightForHeight; ageFactor = 1.0; idealWeightRangeLow = baseWeightForHeight * 0.95; // +/- 5% of base for height idealWeightRangeHigh = baseWeightForHeight * 1.05; } // Ensure results are within a reasonable range for Newfoundlands currentWeightKg = Math.max(30, Math.min(100, currentWeightKg)); // Clamp between 30kg and 100kg idealWeightRangeLow = Math.max(25, Math.min(95, idealWeightRangeLow)); idealWeightRangeHigh = Math.max(35, Math.min(105, idealWeightRangeHigh)); targetAdultWeight = Math.max(40, Math.min(90, targetAdultWeight)); document.getElementById('primaryResult').textContent = currentWeightKg.toFixed(1) + ' kg'; document.getElementById('idealWeightRange').textContent = idealWeightRangeLow.toFixed(1) + ' kg to ' + idealWeightRangeHigh.toFixed(1) + ' kg'; document.getElementById('targetAdultWeight').textContent = targetAdultWeight.toFixed(1) + ' kg'; document.getElementById('ageFactor').textContent = ageFactor.toFixed(2); document.getElementById('summaryAge').textContent = ageInMonths + ' months'; document.getElementById('summaryHeight').textContent = heightAtWithers + ' cm'; document.getElementById('summaryBCS').textContent = bodyConditionScore; document.getElementById('resultsSection').style.display = 'block'; updateChart(ageInMonths, heightAtWithers, bodyConditionScore, currentWeightKg, idealWeightRangeLow, idealWeightRangeHigh, targetAdultWeight); } function resetForm() { document.getElementById('ageInMonths').value = 12; document.getElementById('heightAtWithers').value = 75; document.getElementById('bodyConditionScore').value = 5; document.getElementById('resultsSection').style.display = 'none'; // Clear errors document.getElementById('ageInMonthsError').textContent = ""; document.getElementById('heightAtWithersError').textContent = ""; document.getElementById('bodyConditionScoreError').textContent = ""; if (chartInstance) { chartInstance.destroy(); chartInstance = null; } } function copyResults() { var primaryResult = document.getElementById('primaryResult').textContent; var idealWeightRange = document.getElementById('idealWeightRange').textContent; var targetAdultWeight = document.getElementById('targetAdultWeight').textContent; var summaryAge = document.getElementById('summaryAge').textContent; var summaryHeight = document.getElementById('summaryHeight').textContent; var summaryBCS = document.getElementById('summaryBCS').textContent; var resultText = "— Newfoundland Weight Calculation Results —\n\n"; resultText += "Estimated Healthy Weight: " + primaryResult + "\n"; resultText += "Ideal Weight Range: " + idealWeightRange + "\n"; resultText += "Target Adult Weight: " + targetAdultWeight + "\n\n"; resultText += "Key Assumptions:\n"; resultText += "- Age: " + summaryAge + "\n"; resultText += "- Height: " + summaryHeight + "\n"; resultText += "- Body Condition Score: " + summaryBCS + "\n"; try { navigator.clipboard.writeText(resultText).then(function() { alert('Results copied to clipboard!'); }, function(err) { console.error('Could not copy text: ', err); // Fallback for older browsers or environments without clipboard API var textArea = document.createElement("textarea"); textArea.value = resultText; textArea.style.position = "fixed"; textArea.style.left = "-9999px"; document.body.appendChild(textArea); textArea.focus(); textArea.select(); try { document.execCommand('copy'); alert('Results copied to clipboard!'); } catch (e) { alert('Failed to copy results. Please copy manually.'); } document.body.removeChild(textArea); }); } catch (e) { alert('Clipboard API not available. Please copy manually.'); } } // Chart drawing logic (using pure Canvas API) function drawChart(data, options) { if (chartInstance) { chartInstance.destroy(); } chartInstance = new Chart(ctx, { type: 'line', data: data, options: options }); } function updateChart(ageInMonths, heightAtWithers, bodyConditionScore, currentWeightKg, idealWeightRangeLow, idealWeightRangeHigh, targetAdultWeight) { var labels = []; var puppyWeights = []; var adultIdealWeights = []; // Generate labels and data for puppy growth (up to 24 months) for (var i = 1; i <= 24; i++) { labels.push(i + 'm'); var ageFactorPuppy = Math.max(0.3, (i / 18)); var baseWeight = 0; if (heightAtWithers < 70) baseWeight = 50; else if (heightAtWithers < 75) baseWeight = 60; else if (heightAtWithers < 80) baseWeight = 70; else baseWeight = 80; var estimatedPuppyWeight = baseWeight * ageFactorPuppy * (1 + (bodyConditionScore – 5) * 0.03); estimatedPuppyWeight = Math.max(20, Math.min(70, estimatedPuppyWeight)); // Clamp puppy weight puppyWeights.push(estimatedPuppyWeight.toFixed(1)); adultIdealWeights.push(null); // No adult ideal weight in puppy phase } // Add adult phase data labels.push('18m'); var adultBaseWeight = 0; if (heightAtWithers < 70) adultBaseWeight = 50; else if (heightAtWithers < 75) adultBaseWeight = 60; else if (heightAtWithers < 80) adultBaseWeight = 70; else adultBaseWeight = 80; var adultIdeal = adultBaseWeight + (bodyConditionScore – 5) * adultBaseWeight * 0.04; adultIdeal = Math.max(45, Math.min(90, adultIdeal)); puppyWeights.push(null); // No puppy weight at 18m for this series adultIdealWeights.push(adultIdeal.toFixed(1)); // Continue adult ideal weight line for (var i = 19; i <= 36; i++) { // Extend to 3 years labels.push(i + 'm'); adultIdealWeights.push(adultIdeal.toFixed(1)); puppyWeights.push(null); } var chartData = { labels: labels, datasets: [ { label: 'Estimated Weight Progression', data: puppyWeights, borderColor: 'var(–primary-color)', backgroundColor: 'rgba(0, 74, 153, 0.2)', fill: false, tension: 0.1, pointRadius: 3, pointHoverRadius: 5, spanGaps: true // Helps connect data points when null is present }, { label: 'Ideal Adult Weight Target', data: adultIdealWeights, borderColor: 'var(–success-color)', backgroundColor: 'rgba(40, 167, 69, 0.2)', fill: false, tension: 0.1, pointRadius: 3, pointHoverRadius: 5, spanGaps: true } ] }; var chartOptions = { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: false, title: { display: true, text: 'Weight (kg)' } }, x: { title: { display: true, text: 'Age' } } }, plugins: { tooltip: { callbacks: { label: function(context) { var label = context.dataset.label || ''; if (label) { label += ': '; } if (context.parsed.y !== null) { label += context.parsed.y + ' kg'; } return label; } } }, legend: { position: 'top', } } }; // Destroy previous chart instance if it exists if (window.chartInstance) { window.chartInstance.destroy(); } window.chartInstance = new Chart(ctx, { type: 'line', data: chartData, options: chartOptions }); } // Initial chart load window.onload = function() { // Set default values on load resetForm(); // Trigger calculation with defaults to draw initial chart calculateWeight(); };

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