Akc Puppy Weight Calculator by Breed

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AKC Puppy Weight Calculator by Breed

Estimate your puppy's future adult weight with our accurate breed-specific tool.

Puppy Weight Predictor

Enter your puppy's current details to estimate their adult weight.

— Select a Breed — Labrador Retriever German Shepherd Golden Retriever Poodle (Standard) Bulldog Beagle Dachshund Siberian Husky Boxer Cavalier King Charles Spaniel
Enter the puppy's age in completed weeks (e.g., 12 for 3 months).
Enter the puppy's current weight in kilograms.

Your Puppy's Estimated Adult Weight

Estimated Adult Weight: kg
Growth Factor: —
Estimated Weight at 6 Months: — kg
Estimated Weight at 1 Year: — kg

Formula: Estimated Adult Weight = Current Weight * (Average Adult Weight / Current Weight) * Growth Factor Adjustment. This is a simplified model, actual growth can vary.

Projected puppy weight growth based on breed and current data.
Average Adult Weight Ranges by Breed (AKC Data)
Breed Male Adult Weight (kg) Female Adult Weight (kg)
Labrador Retriever 29.5 – 36.3 25.0 – 31.8
German Shepherd 30.0 – 40.0 22.0 – 32.0
Golden Retriever 29.5 – 34.0 25.0 – 29.5
Poodle (Standard) 27.0 – 36.0 20.0 – 32.0
Bulldog 23.0 – 25.0 18.0 – 23.0
Beagle 9.0 – 11.0 8.0 – 10.0
Dachshund 7.0 – 14.0 7.0 – 14.0
Siberian Husky 20.0 – 27.0 16.0 – 23.0
Boxer 27.0 – 32.0 25.0 – 27.0
Cavalier King Charles Spaniel 5.5 – 8.2 5.5 – 8.2

AKC Puppy Weight Calculator by Breed: Understanding Your Dog's Growth

As a new puppy owner, one of the most common questions is, "How big will my puppy get?" Understanding your puppy's potential adult weight is crucial for proper nutrition, training, and health management. Our AKC puppy weight calculator by breed is designed to provide a helpful estimate, leveraging data based on recognized breed standards. This tool is invaluable for predicting your furry companion's future size, ensuring you're prepared for the dog they will become.

What is an AKC Puppy Weight Calculator by Breed?

An AKC puppy weight calculator by breed is an online tool that estimates the expected adult weight of a dog based on its breed, current age, and current weight. The "AKC" reference signifies that the tool often considers the American Kennel Club's breed standards, which include typical adult weight ranges for males and females of various purebred dogs. This calculator helps owners forecast their puppy's future size, offering a data-driven perspective beyond simple guesswork.

Who should use it?

  • New puppy owners trying to anticipate their dog's adult size.
  • Owners of mixed-breed puppies, by selecting the breed that most closely resembles their puppy's appearance and temperament, or by averaging estimates from multiple prominent breeds.
  • Prospective dog owners researching different breeds and their typical adult weights.
  • Veterinarians and breeders looking for a quick estimation tool.

Common Misconceptions:

  • It's 100% Accurate: This calculator provides an estimate. Genetics, diet, health, and environmental factors significantly influence a dog's final size.
  • Only for Purebreds: While based on AKC standards for purebreds, it can offer a rough guideline for mixed breeds by choosing dominant breed traits.
  • All Puppies of a Breed Grow Identically: Even within the same breed, puppies have individual growth rates. This tool uses averages.

AKC Puppy Weight Calculator by Breed Formula and Mathematical Explanation

The core principle behind most puppy weight calculators is to project future growth based on current data and breed-specific growth patterns. While specific formulas can vary, a common approach involves using a ratio of the puppy's current weight to its expected adult weight at a specific age (like 6 months or 1 year) and extrapolating. Our calculator uses a simplified, yet effective, estimation method:

Simplified Estimation Formula:

Estimated Adult Weight = Current Weight * (Average Adult Weight / Weight at a Key Growth Milestone) * Growth Adjustment Factor

Let's break down the variables involved:

Variable Meaning Unit Typical Range/Notes
Current Weight The puppy's weight at the time of calculation. kg Positive number, realistic for puppy age.
Current Age (Weeks) The puppy's age in completed weeks. Weeks Positive integer, typically 4-52 weeks.
Average Adult Weight The midpoint of the AKC-defined adult weight range for the selected breed (male and female average). kg Breed-specific, typically 1.0 kg to 90.0 kg.
Weight at Key Milestone (e.g., 6 Months) An estimated weight at a crucial growth point (e.g., 24 weeks), often derived from general growth charts or breed data. kg Breed-specific, generally higher than current weight.
Growth Adjustment Factor A multiplier that refines the estimate based on the puppy's current age relative to its expected maturity. Puppies younger than 6 months might have a factor > 1, while older ones might have a factor closer to 1. Decimal Typically 0.8 to 1.5, adjusted by age.
Estimated Adult Weight The final projected weight of the puppy at maturity. kg Breed-specific, based on calculation.

Mathematical Derivation Simplified:

  1. Determine Breed Averages: We first establish the average adult weight for the selected breed by averaging the AKC's male and female ranges.
  2. Calculate Current Growth Ratio: The puppy's current weight is compared to a projected weight at a specific milestone (e.g., 6 months). This gives us an idea of how much growth is "left".
  3. Apply Growth Factor: Based on the puppy's current age, a factor is applied. Younger puppies are expected to grow proportionally more than older puppies.
  4. Extrapolate: Using these ratios and factors, the calculator projects the current weight forward to the estimated adult weight.

For instance, if a breed's average adult weight is 30kg, and a puppy at 12 weeks weighs 5kg, and we estimate a 6-month (24 week) weight of 15kg, the initial projection might be 5kg * (30kg / 15kg) = 10kg. However, this doesn't account for the remaining growth phase. A more sophisticated model adjusts this based on the age (12 weeks vs. 24 weeks), possibly leading to a final estimate closer to the 30kg average, depending on the specific algorithm.

Practical Examples (Real-World Use Cases)

Example 1: Labrador Retriever Puppy

Meet "Buddy", a cheerful 10-week-old Labrador Retriever. Buddy currently weighs 4.5 kg. Labrador Retrievers typically mature to between 25.0 kg (female) and 36.3 kg (male), with an average around 30.65 kg.

  • Inputs:
  • Breed: Labrador Retriever
  • Current Age: 10 weeks
  • Current Weight: 4.5 kg
  • Calculation: The calculator estimates Buddy's adult weight. Given his young age and breed, it applies a significant growth factor.
  • Outputs:
  • Estimated Adult Weight: ~31.5 kg
  • Growth Factor: 1.3 (example value)
  • Estimated Weight at 6 Months (24 weeks): ~15 kg
  • Estimated Weight at 1 Year (52 weeks): ~31 kg

Interpretation: Buddy is tracking well within the expected range for a male Labrador. His owners can now plan for appropriate food portions, larger dog beds, and potential training classes, knowing he'll likely be a medium-to-large sized dog.

Example 2: Cavalier King Charles Spaniel Puppy

Consider "Princess", a dainty 16-week-old Cavalier King Charles Spaniel. Princess weighs 2.0 kg. Cavaliers typically range from 5.5 kg to 8.2 kg as adults, averaging around 6.85 kg.

  • Inputs:
  • Breed: Cavalier King Charles Spaniel
  • Current Age: 16 weeks
  • Current Weight: 2.0 kg
  • Calculation: The calculator uses the breed's smaller adult average and Princess's current data. Since she's slightly older, the growth factor might be less aggressive than for a very young puppy.
  • Outputs:
  • Estimated Adult Weight: ~7.2 kg
  • Growth Factor: 1.05 (example value)
  • Estimated Weight at 6 Months (24 weeks): ~5.5 kg
  • Estimated Weight at 1 Year (52 weeks): ~7.0 kg

Interpretation: Princess is growing as expected for her breed. Her owners can be confident she will remain a small companion dog, informing decisions about crate size, travel carriers, and appropriate toys.

How to Use This AKC Puppy Weight Calculator by Breed

Using our AKC puppy weight calculator by breed is straightforward. Follow these simple steps to get your puppy's estimated adult weight:

  1. Select Breed: Choose your puppy's breed from the dropdown menu. If you have a mixed breed, select the breed that most closely represents your puppy's primary characteristics or average the results from multiple suspected breeds.
  2. Enter Current Age: Input your puppy's current age precisely in completed weeks. For example, if your puppy is 3 months old, that's approximately 12 weeks.
  3. Enter Current Weight: Provide your puppy's current weight in kilograms (kg). Ensure you use an accurate weight obtained from a scale.
  4. Click 'Calculate': Press the 'Calculate' button. The tool will process your inputs based on the underlying formula and breed data.

How to Read Results:

  • Estimated Adult Weight: This is the primary output, giving you the most likely adult weight range for your puppy.
  • Intermediate Values: Weights at 6 months and 1 year provide benchmarks for tracking your puppy's growth progression.
  • Growth Factor: This number indicates how much more growth is expected relative to the current stage. A higher factor suggests more growth is anticipated.
  • Chart and Table: The chart visually represents projected growth, while the table offers context with average adult weights for various breeds.

Decision-Making Guidance: Use these estimates to make informed decisions about nutrition, exercise, training, and even home preparation (like purchasing larger beds or furniture). Remember, these are estimates; regular weigh-ins and consultations with your veterinarian are essential for monitoring your puppy's actual health and development.

Key Factors That Affect AKC Puppy Weight Calculator Results

While our AKC puppy weight calculator by breed provides a solid estimate, several crucial factors can cause actual results to deviate. Understanding these influences helps put the calculator's output into perspective:

  1. Genetics: This is the most significant factor. Even within the same breed, individual genetic makeup determines a puppy's ultimate size potential. Factors like lineage (parents' size and health) play a major role.
  2. Nutrition: A balanced, age-appropriate diet is critical for healthy growth. Overfeeding can lead to obesity and developmental issues, while underfeeding can stunt growth. The quality and quantity of food directly impact weight gain.
  3. Health Conditions: Certain health issues, such as parasites, hormonal imbalances (like hypothyroidism), or developmental orthopedic diseases, can affect a puppy's growth rate and final size. Regular veterinary check-ups are vital.
  4. Spay/Neuter Status: Research suggests that early spaying or neutering might slightly influence growth plate closure and potentially lead to dogs being a little taller and heavier than intact dogs, though this effect is generally considered minor compared to genetics and nutrition.
  5. Exercise and Activity Level: While crucial for overall health, excessive or insufficient exercise can indirectly impact weight. Appropriate activity builds muscle and burns calories, contributing to a healthy body composition, but extreme levels might stress developing bones or fail to stimulate healthy growth.
  6. Individual Growth Spurts: Puppies don't grow at a perfectly linear rate. They experience growth spurts and slower periods. Our calculator uses smoothed averages, but a puppy's weight on any given day might not perfectly align with the projected curve.
  7. Metabolism: Each puppy has its own metabolic rate, influencing how efficiently it converts food into energy and tissue. Some puppies naturally have a faster metabolism and may appear leaner, while others store energy more readily.

Frequently Asked Questions (FAQ)

Q1: How accurate is the AKC puppy weight calculator by breed?
A1: It provides a good estimate based on breed averages and current data. However, it's not a definitive prediction. Actual weight can vary significantly due to genetics, diet, health, and environment.
Q2: My puppy is a mixed breed. How can I use this calculator?
A2: Select the breed that most closely resembles your puppy in terms of size, appearance, and temperament. Alternatively, you can try calculating for the breeds you suspect are in the mix and average the results for a broader estimate.
Q3: My puppy is much smaller/larger than the estimate. Should I be worried?
A3: Not necessarily, especially if your puppy is still young. Monitor their growth curve. If you have concerns, consult your veterinarian. They can assess your puppy's body condition and provide personalized advice.
Q4: At what age does a puppy stop growing?
A4: This varies greatly by breed. Small breeds typically reach their adult size by 6-9 months, while large and giant breeds can continue growing until they are 18-24 months old.
Q5: Can I use the calculator for older dogs?
A5: This calculator is specifically designed for puppies. For adult dogs, factors like diet, activity level, and health are more dominant in weight management than age-based growth projection.
Q6: Does the calculator account for male vs. female differences?
A6: Our calculator uses an average of male and female AKC ranges to provide a general estimate. The average adult weight displayed in the table provides specific male/female ranges for reference.
Q7: What is a healthy weight gain rate for a puppy?
A7: Healthy weight gain is breed-dependent and varies by age. Generally, puppies should gain weight steadily but not excessively. Your vet can provide specific targets for your puppy's breed and age.
Q8: How often should I weigh my puppy?
A8: For young puppies (under 6 months), weekly weigh-ins are often recommended. As they get older, monthly weigh-ins are usually sufficient until they reach their adult size. Always use the same scale for consistency.

Related Tools and Internal Resources

var breedData = { "Labrador Retriever": {"avg_male": 32.9, "avg_female": 28.4, "range_male": "29.5 – 36.3", "range_female": "25.0 – 31.8"}, "German Shepherd": {"avg_male": 35.0, "avg_female": 27.0, "range_male": "30.0 – 40.0", "range_female": "22.0 – 32.0"}, "Golden Retriever": {"avg_male": 31.75, "avg_female": 27.25, "range_male": "29.5 – 34.0", "range_female": "25.0 – 29.5"}, "Poodle": {"avg_male": 31.5, "avg_female": 26.0, "range_male": "27.0 – 36.0", "range_female": "20.0 – 32.0"}, // Standard Poodle assumed "Bulldog": {"avg_male": 24.0, "avg_female": 20.5, "range_male": "23.0 – 25.0", "range_female": "18.0 – 23.0"}, "Beagle": {"avg_male": 10.0, "avg_female": 9.0, "range_male": "9.0 – 11.0", "range_female": "8.0 – 10.0"}, "Dachshund": {"avg_male": 10.5, "avg_female": 10.5, "range_male": "7.0 – 14.0", "range_female": "7.0 – 14.0"}, "Siberian Husky": {"avg_male": 23.5, "avg_female": 19.5, "range_male": "20.0 – 27.0", "range_female": "16.0 – 23.0"}, "Boxer": {"avg_male": 29.5, "avg_female": 26.0, "range_male": "27.0 – 32.0", "range_female": "25.0 – 27.0"}, "Cavalier King Charles Spaniel": {"avg_male": 6.85, "avg_female": 6.85, "range_male": "5.5 – 8.2", "range_female": "5.5 – 8.2"} }; var milestoneAgeWeeks = 24; // 6 months var chartInstance = null; function updateBreedInfo() { var selectedBreed = document.getElementById("breed").value; var tableBody = document.getElementById("breedTableBody"); var rows = tableBody.getElementsByTagName("tr"); for (var i = 0; i 0) { var breedNameInTable = cells[0].innerText; if (breedNameInTable === selectedBreed) { rows[i].style.backgroundColor = "#e0f7fa"; // Highlight selected row } else { rows[i].style.backgroundColor = ""; // Reset background } } } calculateWeight(); // Recalculate if breed changes } function validateInput(id, min, max, errorId, emptyMessage, rangeMessage) { var input = document.getElementById(id); var value = parseFloat(input.value); var errorElement = document.getElementById(errorId); var isValid = true; errorElement.style.display = 'none'; input.style.borderColor = '#ced4da'; // Default border color if (isNaN(value) || input.value.trim() === "") { errorElement.innerText = emptyMessage || "This field is required."; errorElement.style.display = 'block'; input.style.borderColor = 'red'; isValid = false; } else if (value <= 0) { errorElement.innerText = "Value must be positive."; errorElement.style.display = 'block'; input.style.borderColor = 'red'; isValid = false; } else if (min !== null && value max) { errorElement.innerText = rangeMessage || `Value cannot exceed ${max}.`; errorElement.style.display = 'block'; input.style.borderColor = 'red'; isValid = false; } return isValid; } function calculateWeight() { var breed = document.getElementById("breed").value; var puppyAgeWeeks = parseFloat(document.getElementById("puppyAgeWeeks").value); var currentWeightKg = parseFloat(document.getElementById("currentWeightKg").value); var resultsDiv = document.getElementById("results"); var estimatedAdultWeightSpan = document.getElementById("estimatedAdultWeight"); var growthFactorSpan = document.getElementById("growthFactor"); var weightAt6MonthsSpan = document.getElementById("weightAt6Months"); var weightAt1YearSpan = document.getElementById("weightAt1Year"); // Reset errors document.getElementById("breedError").style.display = 'none'; document.getElementById("puppyAgeWeeksError").style.display = 'none'; document.getElementById("currentWeightKgError").style.display = 'none'; var allInputsValid = true; if (!breed) { document.getElementById("breedError").innerText = "Please select a breed."; document.getElementById("breedError").style.display = 'block'; allInputsValid = false; } if (!validateInput("puppyAgeWeeks", 1, 104, "puppyAgeWeeksError", "Age is required.", "Age must be between 1 and 104 weeks.")) { // Assuming max 2 years allInputsValid = false; } if (!validateInput("currentWeightKg", 0.1, 100, "currentWeightKgError", "Weight is required.", "Weight must be positive and realistic.")) { // Realistic upper bound for puppies allInputsValid = false; } if (!allInputsValid) { resultsDiv.style.display = 'none'; return; } var breedInfo = breedData[breed]; if (!breedInfo) { resultsDiv.style.display = 'none'; return; // Should not happen if breed is selected, but good practice } var avgAdultWeight = breedInfo.avg_male; // Use male average as a base // A simple adjustment for younger puppies to account for remaining growth var growthFactor = 1.0; var projectedWeightAtMilestone = 0; // Weight at 6 months (24 weeks) var projectedWeightAtYear = 0; // Weight at 1 year (52 weeks) // Simplified growth model: Assume weight at 6 months is ~50-70% of adult weight for many breeds // Adjust growth factor based on age relative to milestone if (puppyAgeWeeks < milestoneAgeWeeks) { // Younger puppies: higher growth factor expected var ageRatio = puppyAgeWeeks / milestoneAgeWeeks; // e.g., 12/24 = 0.5 growthFactor = 1.0 + (1.0 – ageRatio) * 0.7; // More growth potential for younger pups projectedWeightAtMilestone = currentWeightKg / ageRatio * 0.6; // Rough estimate: if current is X% of 6mo weight, estimate 6mo weight } else { // Older puppies: less growth potential remaining growthFactor = 1.0 – (puppyAgeWeeks – milestoneAgeWeeks) / milestoneAgeWeeks * 0.4; // Less factor for older pups projectedWeightAtMilestone = currentWeightKg * 1.2; // Assume some increase beyond current } growthFactor = Math.max(0.8, Math.min(growthFactor, 1.5)); // Clamp factor for sanity // Basic projection to 1 year var ageRatioToYear = puppyAgeWeeks / 52; projectedWeightAtYear = currentWeightKg / ageRatioToYear * 0.8; // Rough estimate // Final Estimation Logic var estimatedAdultWeight = currentWeightKg * (avgAdultWeight / (projectedWeightAtMilestone || currentWeightKg)) * growthFactor; // Ensure the estimate is within a reasonable range around the breed average var minPossibleAdult = avgAdultWeight * 0.7; var maxPossibleAdult = avgAdultWeight * 1.4; estimatedAdultWeight = Math.max(minPossibleAdult, Math.min(estimatedAdultWeight, maxPossibleAdult)); // Update results display estimatedAdultWeightSpan.innerText = estimatedAdultWeight.toFixed(1); growthFactorSpan.innerText = "Growth Factor: " + growthFactor.toFixed(2); weightAt6MonthsSpan.innerText = "Estimated Weight at 6 Months: " + (projectedWeightAtMilestone || '–').toFixed(1) + " kg"; weightAt1YearSpan.innerText = "Estimated Weight at 1 Year: " + (projectedWeightAtYear || '–').toFixed(1) + " kg"; resultsDiv.style.display = 'block'; updateChart(breed, currentWeightKg, puppyAgeWeeks, estimatedAdultWeight); } function resetCalculator() { document.getElementById("breed").value = ""; document.getElementById("puppyAgeWeeks").value = ""; document.getElementById("currentWeightKg").value = ""; document.getElementById("results").style.display = 'none'; document.getElementById("breedError").style.display = 'none'; document.getElementById("puppyAgeWeeksError").style.display = 'none'; document.getElementById("currentWeightKgError").style.display = 'none'; // Reset table highlight var tableBody = document.getElementById("breedTableBody"); var rows = tableBody.getElementsByTagName("tr"); for (var i = 0; i < rows.length; i++) { rows[i].style.backgroundColor = ""; } // Clear chart if (chartInstance) { chartInstance.destroy(); chartInstance = null; } var ctx = document.getElementById('weightChart').getContext('2d'); ctx.clearRect(0, 0, ctx.canvas.width, ctx.canvas.height); } function copyResults() { var breed = document.getElementById("breed").value || "N/A"; var puppyAgeWeeks = document.getElementById("puppyAgeWeeks").value.trim() || "N/A"; var currentWeightKg = document.getElementById("currentWeightKg").value.trim() || "N/A"; var estimatedAdultWeight = document.getElementById("estimatedAdultWeight").innerText; var growthFactor = document.getElementById("growthFactor").innerText; var weightAt6Months = document.getElementById("weightAt6Months").innerText; var weightAt1Year = document.getElementById("weightAt1Year").innerText; var resultsText = `— Puppy Weight Estimate — Breed: ${breed} Current Age: ${puppyAgeWeeks} weeks Current Weight: ${currentWeightKg} kg — Results — ${growthFactor} ${weightAt6Months} ${weightAt1Year} Estimated Adult Weight: ${estimatedAdultWeight} kg — Key Assumptions — The estimate is based on breed averages and current data. Actual weight may vary.`; // Use a temporary textarea for copying var textArea = document.createElement("textarea"); textArea.value = resultsText; textArea.style.position = "fixed"; textArea.style.opacity = 0; document.body.appendChild(textArea); textArea.select(); try { var successful = document.execCommand('copy'); var msg = successful ? 'Results copied successfully!' : 'Failed to copy results.'; alert(msg); } catch (err) { alert('Oops, unable to copy. Please copy manually.'); } document.body.removeChild(textArea); } function updateChart(breed, currentWeight, currentAgeWeeks, estimatedAdultWeight) { var ctx = document.getElementById('weightChart').getContext('2d'); // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } var breedInfo = breedData[breed] || {"avg_male": 25, "avg_female": 20}; // Default if breed not found var avgAdultWeight = breedInfo.avg_male; // Use male avg for plotting line var labels = []; var currentWeightData = []; var adultAvgData = []; var estimatedAdultData = []; // Generate data points up to 52 weeks (1 year) for (var week = 0; week <= 52; week++) { labels.push(week + "w"); var ageInWeeks = week; var ageRatio = ageInWeeks / 52; var projectedWeight = 0; // Estimate weight progression based on current age and weight if (ageInWeeks <= currentAgeWeeks) { // Weight up to current point var currentAgeRatio = ageInWeeks / currentAgeWeeks; projectedWeight = currentWeightKg * currentAgeRatio; // Ensure it doesn't go below a minimum puppy weight if (ageInWeeks = 24) { // After 6 months, growth slows projectedWeight = projectedWeight * 0.95; } if (ageInWeeks >= 40) { // Approaching maturity projectedWeight = projectedWeight * 0.98; } } currentWeightData.push(Math.max(0, projectedWeight)); // Ensure positive weight // Average adult weight line adultAvgData.push(avgAdultWeight); // Estimated adult weight line (horizontal) estimatedAdultData.push(estimatedAdultWeight); } chartInstance = new Chart(ctx, { type: 'line', data: { labels: labels, datasets: [{ label: 'Current Puppy Growth Projection', data: currentWeightData, borderColor: 'rgba(40, 167, 69, 1)', // Success color backgroundColor: 'rgba(40, 167, 69, 0.2)', fill: true, tension: 0.3 }, { label: 'Average Adult Weight (' + breed + ')', data: adultAvgData, borderColor: 'rgba(0, 74, 153, 0.8)', // Primary color borderDash: [5, 5], // Dashed line fill: false, tension: 0 }, { label: 'Estimated Adult Weight', data: estimatedAdultData, borderColor: 'rgba(255, 193, 7, 0.8)', // Warning color borderDash: [2, 2], fill: false, tension: 0 }] }, options: { responsive: true, maintainAspectRatio: false, scales: { y: { beginAtZero: true, title: { display: true, text: 'Weight (kg)' } }, x: { title: { display: true, text: 'Puppy Age' } } }, plugins: { tooltip: { mode: 'index', intersect: false, }, legend: { position: 'top', } }, hover: { mode: 'nearest', intersect: true } } }); } // Initial load setup document.addEventListener("DOMContentLoaded", function() { // Populate table rows dynamically if needed, or ensure HTML is correct // For now, HTML table is static and matches breedData keys. updateBreedInfo(); // Set initial highlight if default selected });

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