Canine Brief Pain Inventory (CBPI)
The CBPI gives you two numbers: a pain severity score and a pain interference score, each 0-10, from 11 questions you answer about your dog's last 7 days. It was developed and validated at the University of Pennsylvania School of Veterinary Medicine to track chronic pain (from osteoarthritis and other conditions) over time — fill it in, then fill it in again after a treatment change to see whether the numbers moved by a clinically meaningful amount.
The Canine Brief Pain Inventory is copyright © 2017 Dorothy Cimino Brown, MS, DVM, DACVS (www.CanineBPI.com). It is reproduced below unmodified — the wording, order, and response scales are exactly as published — under the copyright holder's published terms: free to reproduce in full without charge, provided the source is cited, the instrument is not altered, and it is not sold. Source:University of Pennsylvania, "Canine Brief Pain Inventory" (PDF). This English original is not a translation of any other version, and this page does not sell or gate the instrument.
What the scores mean
The Pain Severity Score is the average of the four "worst / least / average / now" ratings. The Pain Interference Score is the average of the six function items (usable once at least 4 of the 6 are answered). Comparing two completed CBPIs over time — for example before and after starting a treatment — a published definition of individual-dog treatment success is a drop of at least 1 point in the severity score and at least 2 points in the interference score (Brown DC, Boston RC, Farrar JT, "Power of treatment success definitions when the Canine Brief Pain Inventory is used to evaluate carprofen treatment for the control of pain and inflammation in dogs with osteoarthritis," Am J Vet Res. 2013;74(12):1467-1473). The quality-of-life question is not part of either score — it's a standalone impression the instrument's authors found too coarse to move except with very large pain changes.
This tool scores the CBPI. It does not diagnose the source of your dog's pain or recommend treatment — bring the numbers to your vet.