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Find the right APOP resource
Choose the path that best matches what you need today.
Is my pet at a healthy body condition?
Check body condition, review calories and feeding, and find safer weight-management guidance.
Start with body condition Veterinary teamsI need clinical tools
Open BCS and MCS charts, clinical calculators, client materials, and communication resources.
View resources Research & dataI need survey information
Review prevalence methodology, annual findings, historical results, and clinic participation information.
Explore research and data2026 Surveys
Take part in APOP's 2026 research
APOP measures overweight and obesity in dogs and cats through two surveys. Add your clinic's data, or share your perspective.
Why it matters
A large share of dogs and cats carry excess weight, which is associated with a higher risk of conditions such as osteoarthritis, diabetes, and a shorter, less comfortable life. Measuring how common it is helps veterinary teams and owners recognize excess weight earlier and take action together.
2026 Prevalence Survey
APOP runs this clinic-based prevalence survey every few years, and 2026 is the current cycle. Register any time and collect data on a day, two days, or a week you choose between October 1 and December 31. Records can be entered online through the end of the year. Qualifying U.S. clinics receive a stipend for staff time.
Pet Obesity & Nutrition Opinion Survey
Conducted each year and open to veterinary professionals and dog and cat owners. Share your views on pet obesity and nutrition. The survey link goes live October 1.
Popular tools
Practical resources, all in one place
Start with body condition, then use the tools that fit your pet, patient, or clinical question.
Body and muscle condition
View dog, cat, rabbit, and horse BCS charts, plus the dog and cat Muscle Condition Score chart.
View BCS & MCS chartsDog and cat calorie tools
Estimate daily needs, review current intake, check treats, and translate calorie targets into measured feeding amounts.
Choose a calculatorWeight-loss guidance
Practical dog and cat guidance covering measured feeding, activity, monitoring, rechecks, and veterinary follow-up.
Veterinary team resources
Clinical calculators, BCS and MCS resources, client handouts, and communication support for weight-management care.
Open veterinary toolsResearch & prevalence
Evidence behind the tools
Review current findings, survey methods, and APOP’s historical pet obesity data.
2025 Pet Obesity & Nutrition Opinion Survey
Review self-reported findings on body condition, feeding practices, weight-management efforts, and veterinary communication.
Read the 2025 findingsAPOP surveys and data
See how clinic-based prevalence surveys and opinion surveys are designed, analyzed, and interpreted, then browse results by year.
Explore surveys and dataState of Pet Obesity report
Review APOP’s U.S. report on dog and cat obesity prevalence, owner perception, feeding behavior, and clinical trends.
View the reportClinic survey registration
2026 Clinic Prevalence Survey
New for 2026: U.S. clinics that submit 15 or more records receive a $50 stipend for staff time.
Choose a day, two days, from October 1 through December 31 and record species, weight, 1–9 Body Condition Score, and owner perception for eligible dogs and cats.
- October 2026
- Dogs and cats
- One day or week
Stay informed
Get APOP updates
Receive new tools, survey deadlines, research findings, and practical guidance for pet owners and veterinary teams.