Sources

Figures on this site come from these published sources.

• Wang (dog epigenetic age): Cell Systems 2020 — 16 × ln(dog_age) + 31
• AAHA (dog size chart + nutrition factors): physiological-age poster · 2021 RER/MER box
• AAFP / AAHA (cat life stages): 2021 Feline Life Stage Guidelines
• Merck (puppy growth band): Feeding Practices in Small Animals — 2–4 g/day/kg adult
• Salt (size bands / growth standards): PLOS ONE 2017 growth standard charts
• AKC (dog breed registration ranks): Most popular dog breeds of 2025 · on-page summary
• CFA (cat breed registration ranks): Most popular breeds for 2025 (2024 regs) · on-page summary
• AAFCO (pet food labels): Reading pet food labels
• WSAVA (selecting pet foods): Guidelines on Selecting Pet Foods (PDF) · Global Nutrition Guidelines
• UC Davis / Stockman (homemade diets): Stockman et al. 2013 JAVMA · UC Davis news summary
• FDA (pet food & DCM investigation): Pet Food · DCM Q&A
• ASPCA (pet care costs & nutrition notes): Cutting pet care costs · Why can’t my cat be vegan? · Finding a lost pet
• AVMA / AAHA / HSUS (lost pet & microchips): AVMA microchips · AAHA microchip lookup · HSUS / Humane World lost dog · on-page guide
• NAPHIA (pet insurance industry averages): State of the Industry 2025 highlights (PDF)
• NAIC (pet insurance consumer guidance): Consumer insight · Pet insurance topic

These tools are educational. They are not veterinary advice and do not replace a veterinarian.

Insurance pages summarize published industry figures and public plan features. They are not insurance advice and are not a quote or recommendation to buy any policy.