Official Rule Book

2026 Rule Book Effective April 4, 2026
Revised September 1, 2026
82 pages, PDF
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What's in the rule book

Looking for a specific rule? Jump straight to it below. Page numbers match those printed in the rule book.

General rules and guidelines

SectionPage
Dog registration, eligibility, and restrictionsPage 4
Handler conductPage 5
Junior Handler registration, program, and titlesPage 6
Ring set-up, worker stationing, ring gate procedure, and competitor stagingPage 7
General competition and ring rules of conductPage 8
Acceptable behavior, faults, non-qualifying runs, and bonus pointsPages 10–11
Obstacles and performancePage 12
Rats, containers, and removal guidelinesPages 12–14
Dog conduct, contact, and incidents, with the incident flow chartPages 15–17
Notes for judges, and when things go wrongPage 17
Ring roles — judge, rat steward, rat catcher, timer, scribe, score tablePage 19
Notes for hosts and trial chairs on late arrivalsPage 20

Standard classes and titles

SectionPage
Rat scoring, tube visibility and height, and timingPage 21
Class level details — Ratter, Happy Ratter, Expert Ratter, Champion Ratter, Extraordinaire Ratter, Extreme RatterPages 22–25
Summary table for the standard classes (print this one for the score table)Page 26

Games

GamePage
How the games work, and games titlesPage 27
A-MAZE-ing RatPage 28
Box-A-RatPage 35
Dump HunterPage 37
Earn A RatPage 38
InfestationPage 40
Rats in the Garden and Rats in the HousePage 41
Rat RacePage 43
Rat TrapPage 44
Road Rage RatsPage 46
Silent HuntPage 49
Ultimate DistancePage 51
Village RatsPage 52
Games summary tables for quick reference and course set-upPages 61–63
Versatility titlesPages 65–66

Team games

GamePage
Team games overviewPage 54
Double DutchPage 55
Three Dog NightPage 58
Team games summary tablesPage 64

Appendix

SectionPage
Ring set-up suggestions and diagrams, ring size, ammo boxes, team games ring set-upsPages 67–72
Ribbons — qualifying colors, placements, titlesPage 73
Happy Ratters logo details for ribbon ordersPage 74
Dog incident reports, flow chart, and the incident report formPages 75–76
Step-by-step Secreterrier helpPages 77–79
Record of ChangesPage 81

Handy alongside the rule book

Shorter documents and pages that pull one part of the rules out for quick reference.

Score Table Summary Sheets Class and game rules with scoring tables, sized for ringside reference. View PDF →
Handler FAQs Plain-language answers to the questions handlers ask most, each linked to the rule it comes from. Read the FAQs →
Rat Care Guidelines for Hosts & Judges How trial rats are housed, handled, and kept comfortable and safe. View PDF → Rat care on the site →
Approved Collars & Harnesses What dogs can wear in the ring — the approved collar and harness types. View PDF →

Spotted a rule that reads two ways, or a page number that lands in the wrong place? Let us know and we'll get it corrected in the next revision.