Our Methodology

How Tails.city turns public records, modeled estimates, and editorial rules into a repeatable city-by-city comparison for dog owners.

Paw Score Algorithm Methodology Data Visualization

The Paw Score™ Formula

The Paw Score™ is a comparison model, not a claim of perfect ground truth. We combine public datasets, curated legal research, and internal estimation rules to generate a score between -2.00 and 2.00, which is then mapped to a traditional A to F grading scale.

Core Dimensions Analyzed (The 7-Axis Radar)

1. Veterinary Access

Weight: 20%

Calculates the concentration of veterinary practices per 10,000 residents using Census County Business Patterns (NAICS 541940). Low density designates a "Vet Desert."

2. Outdoor Freedom

Weight: 20%

Uses NOAA climate data from the nearest municipal weather station to calculate "walkable days" (days between 20°F and 90°F), plus estimated dog parks per capita.

3. Housing Burden

Weight: 20%

Analyzes localized median rent data from the US Census (ACS 5-Year) to project expected pet rent surcharges, estimating the housing friction of pet ownership in apartments.

4. Financial Cost

Weight: 15%

Cross-references regional CPI data from the Bureau of Labor Statistics (BLS) to calculate standard deviations in veterinary checkups and dog food pricing.

5. Safety & Disaster Risk

Weight: 10%

Integrates the FEMA National Risk Index, identifying cities prone to hurricanes, wildfires, or extreme weather events that necessitate emergency pet evacuations.

6. Air Quality (Environment)

Weight: 10%

Utilizes EPA AirNow median AQI data. High numbers of "Unhealthy for Sensitive Groups" days heavily penalize cities, especially critical for brachycephalic (flat-faced) breeds.

7. Community & BSL

Weight: 5%

Tracks Breed-Specific Legislation (BSL). Active bans on specific breeds trigger heavy penalties, while state preemption protections provide positive adjustments. Local laws can change quickly, so readers should verify current ordinances directly.

Data Sources (EEAT)

  • US Census Bureau (ACS & CBP): Median rent and veterinary practice business density.
  • NOAA (National Oceanic and Atmospheric Administration): 1991-2020 Climate Normals mapped to 1,600+ municipal stations.
  • BLS (Bureau of Labor Statistics): Regional Consumer Price Index differentials for pet supplies.
  • FEMA (Federal Emergency Management Agency): National Risk Index (NRI) for 18 natural hazards.
  • EPA (Environmental Protection Agency): AirNow localized air quality indices and hazard day counts.
  • Municipal Code Research: Curated tracking for active Breed Specific Legislation.

Some city-level fields are modeled from county-level or regional data when direct local coverage is unavailable. When that happens, the score remains useful for comparison, but it should be read as an estimate rather than a direct measurement.

Final Grading System

The raw model output is translated into an easy-to-understand letter grade:

  • A Exceptional: Perfect climate, cheap vets, no legal restrictions.
  • B Great: Highly liveable, minor seasonal or cost friction.
  • C Average: National baseline. Watch out for weather extremes.
  • D Poor: Expensive healthcare, lack of parks, or harsh climates.
  • F Danger: Active legal breed bans combined with hazardous environment.