Sources

These are the 34 veterinary guidelines, reference texts, studies and breed charts behind the PupRange calculators, grouped by the tool that uses them. Each one shows how we checked it and when.

Sources checked

25 were checked against the original, 8 through a secondary source such as a press release or a quote, and 1 not yet. How each source is used, and what we have not been able to confirm, is on the methodology page.

Puppy weight calculator

  1. AKC Breed Weight Chart Checked against the original. Checked
  2. AKC breed page, Beagle (weight_display) Checked against the original. Checked
  3. AKC breed page, Pembroke Welsh Corgi (weight_display) Checked against the original. Checked
  4. AKC breed page, Boxer (weight_display) Checked against the original. Checked
  5. Menchetti L, Padalino B, Brasileiro Fernandes F, Nanni Costa L. Comparison of nonlinear growth models and factors affecting body weight at different ages in Toy Poodles. Ital J Anim Sci 2020;19(1):792–802 Checked through a secondary source. Checked
  6. Trangerud C, Grøndalen J, Indrebø A, Tverdal A, Ropstad E, Moe L. A longitudinal study on growth and growth variables in dogs of four large breeds raised in domestic environments. J Anim Sci 2007;85:76–83 Checked through a secondary source. Checked
  7. WALTHAM Puppy Growth Charts (7 size bands incl. 40–47.5 kg and >47.5 kg) Checked against the original. Checked
  8. Montoya M, Morrison JA, Arrignon F, Spofford N, Charles H, Hours M-A, Biourge V. Life expectancy tables for dogs and cats derived from clinical data. Front Vet Sci 2023;10:1082102, Table 2 Checked against the original. Checked
  9. Salt C, Morris PJ, German AJ, Wilson D, Lund EM, Cole TJ, Butterwick RF. Growth standard charts for monitoring bodyweight in dogs of different sizes. PLOS ONE 2017;12(9):e0182064 Checked against the original. Checked
  10. WSAVA Global Nutrition Committee, Body Condition Score (dog), 9-point chart Checked against the original. Checked
  11. Cline MG, Burns KM, Coe JB, et al. 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats, Table 2 (p.155): each BCS >5/9 is equivalent to being 10% overweight Checked through a secondary source. Checked
  12. US customary units, exact international definitions (NIST Handbook 44 App. C) Checked through a secondary source. Checked

Puppy growth chart

  1. AKC Breed Weight Chart Checked against the original. Checked
  2. AKC breed page, Beagle (weight_display) Checked against the original. Checked
  3. AKC breed page, Pembroke Welsh Corgi (weight_display) Checked against the original. Checked
  4. AKC breed page, Boxer (weight_display) Checked against the original. Checked
  5. Menchetti L, Padalino B, Brasileiro Fernandes F, Nanni Costa L. Comparison of nonlinear growth models and factors affecting body weight at different ages in Toy Poodles. Ital J Anim Sci 2020;19(1):792–802 Checked through a secondary source. Checked
  6. Trangerud C, Grøndalen J, Indrebø A, Tverdal A, Ropstad E, Moe L. A longitudinal study on growth and growth variables in dogs of four large breeds raised in domestic environments. J Anim Sci 2007;85:76–83 Checked through a secondary source. Checked
  7. WALTHAM Puppy Growth Charts (7 size bands incl. 40–47.5 kg and >47.5 kg) Checked against the original. Checked
  8. Montoya M, Morrison JA, Arrignon F, Spofford N, Charles H, Hours M-A, Biourge V. Life expectancy tables for dogs and cats derived from clinical data. Front Vet Sci 2023;10:1082102, Table 2 Checked against the original. Checked
  9. Salt C, Morris PJ, German AJ, Wilson D, Lund EM, Cole TJ, Butterwick RF. Growth standard charts for monitoring bodyweight in dogs of different sizes. PLOS ONE 2017;12(9):e0182064 Checked against the original. Checked
  10. WSAVA Global Nutrition Committee, Body Condition Score (dog), 9-point chart Checked against the original. Checked
  11. Cline MG, Burns KM, Coe JB, et al. 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats, Table 2 (p.155): each BCS >5/9 is equivalent to being 10% overweight Checked through a secondary source. Checked
  12. US customary units, exact international definitions (NIST Handbook 44 App. C) Checked through a secondary source. Checked

Dog age calculator

  1. Montoya M, Morrison JA, Arrignon F, Spofford N, Charles H, Hours M-A, Biourge V. Life expectancy tables for dogs and cats derived from clinical data. Front Vet Sci 2023;10:1082102, Table 2 Checked against the original. Checked
  2. Wang T, Ma J, Hogan AN, et al. Quantitative translation of dog-to-human aging by conserved remodeling of the DNA methylome. Cell Systems 2020;11(2):176–185 Checked through a secondary source. Checked
  3. AVMA guideline as quoted by AKC, 'How to Calculate Dog Years to Human Years' Checked through a secondary source. Checked
  4. AAHA 2019 Canine Life Stage Guidelines (Creevey KE, Grady J, Little SE, et al. JAAHA 2019;55:267–290) Checked through a secondary source. Checked
  5. VCA Hospitals / Canadian Academy of Veterinary Nutrition, Feeding Growing Puppies (updated 4 Feb 2025) Checked against the original. Checked

Dog food calculator

  1. WSAVA Global Nutrition Committee, Body Condition Score (dog), 9-point chart Checked against the original. Checked
  2. Cline MG, Burns KM, Coe JB, et al. 2021 AAHA Nutrition and Weight Management Guidelines for Dogs and Cats, Table 2 (p.155): each BCS >5/9 is equivalent to being 10% overweight Checked through a secondary source. Checked
  3. Merck Veterinary Manual, Nutritional Requirements of Small Animals (Sanderson SL; reviewed Nov 2023, modified Sep 2024) Checked against the original. Checked
  4. AAHA 2021 Nutrition and Weight Management Guidelines for Dogs and Cats, Box 1 'Energy Requirement Calculations' Checked against the original. Checked
  5. Merck Veterinary Manual table: Daily Maintenance Energy Requirements for Dogs and Cats Checked against the original. Checked
  6. Pet Nutrition Alliance, Calculating Calories Based on Pet Needs (MER/RER sheet) Checked against the original. Checked
  7. National Research Council (2006), Your Dog's Nutritional Needs (brochure for owners) Checked against the original. Checked
  8. WSAVA, Calorie Ranges for an Average Healthy Adult Dog in Ideal Body Condition (updated July 2020) Checked against the original. Checked
  9. Linder DE, Freeman LM. Evaluation of calorie density and feeding directions for commercially available diets designed for weight loss in dogs and cats. JAVMA 2010 (as reported by Tufts Now, 26 Jan 2010) Checked through a secondary source. Checked
  10. US customary units, exact international definitions (NIST Handbook 44 App. C) Checked through a secondary source. Checked

Puppy feeding chart

  1. Merck Veterinary Manual, Nutritional Requirements of Small Animals (Sanderson SL; reviewed Nov 2023, modified Sep 2024) Checked against the original. Checked
  2. AAHA 2021 Nutrition and Weight Management Guidelines for Dogs and Cats, Box 1 'Energy Requirement Calculations' Checked against the original. Checked
  3. AKC Staff, Puppy Feeding Fundamentals (updated Oct 15, 2026) Checked against the original. Checked
  4. VCA Hospitals / Canadian Academy of Veterinary Nutrition, Feeding Growing Puppies (updated 4 Feb 2025) Checked against the original. Checked
  5. Linder DE, Freeman LM. Evaluation of calorie density and feeding directions for commercially available diets designed for weight loss in dogs and cats. JAVMA 2010 (as reported by Tufts Now, 26 Jan 2010) Checked through a secondary source. Checked
  6. US customary units, exact international definitions (NIST Handbook 44 App. C) Checked through a secondary source. Checked

Chocolate toxicity calculator

  1. Merck Veterinary Manual, Chocolate Toxicosis in Animals (Hayes C, ASPCA APCC; full review Sep 2024, modified Feb 2026) Checked against the original. Checked
  2. USDA FoodData Central, SR Legacy Checked against the original. Checked
  3. ASPCA Animal Poison Control Center Checked against the original. Checked
  4. Pet Poison Helpline Checked against the original. Checked
  5. US customary units, exact international definitions (NIST Handbook 44 App. C) Checked through a secondary source. Checked

Dog pregnancy calculator

  1. Merck Veterinary Manual — Breeding Management of Dogs and Cats; Whelping and Queening in Dogs and Cats; Pregnancy Determination (Davidson AP; reviewed Jun 2025, modified Jul 2026) Checked against the original. Checked
  2. VCA Hospitals, Feeding the Pregnant Dog (updated 3 Mar 2025) Checked against the original. Checked
  3. Merck (Davidson) + VCA 'Pregnancy Testing in the Dog' (updated 30 Oct 2026) Checked against the original. Checked
  4. Merck Veterinary Manual, Dystocia in Small Animals (Scully) Checked against the original. Checked

Breed charts

  1. AKC Breed Weight Chart Checked against the original. Checked
  2. AKC, Most Popular Dog Breeds of 2025 Checked against the original. Checked
  3. Menchetti L, Padalino B, Brasileiro Fernandes F, Nanni Costa L. Comparison of nonlinear growth models and factors affecting body weight at different ages in Toy Poodles. Ital J Anim Sci 2020;19(1):792–802 Checked through a secondary source. Checked
  4. Trangerud C, Grøndalen J, Indrebø A, Tverdal A, Ropstad E, Moe L. A longitudinal study on growth and growth variables in dogs of four large breeds raised in domestic environments. J Anim Sci 2007;85:76–83 Checked through a secondary source. Checked
  5. Montoya M, Morrison JA, Arrignon F, Spofford N, Charles H, Hours M-A, Biourge V. Life expectancy tables for dogs and cats derived from clinical data. Front Vet Sci 2023;10:1082102, Table 2 Checked against the original. Checked
  6. Salt C, Morris PJ, German AJ, Wilson D, Lund EM, Cole TJ, Butterwick RF. Growth standard charts for monitoring bodyweight in dogs of different sizes. PLOS ONE 2017;12(9):e0182064 Checked against the original. Checked

Listed but not used in any result

  1. AKC breed page, Cane Corso (weight_display) Not yet checked against the original. Checked