Organizations

AAC
Agility Association of Canada
AHBA
American Herding Breeds Association
AKC
American Kennel Club
CKC
Canadian Kennel Club
NADAC
North American Dog Agility Council
UKC
United Kennel Club (USA)
USDAA
United States Dog Agility Association

Agility Titles

AX
Agility Excellent (AKC)
MX
Master Agility Excellent (AKC)
NA
Novice Agility (AKC)
OA
Open Agility (AKC)
NAJ
Novice Jumper With Weaves (AKC)
OAJ
Open Jumper With Weaves (AKC)
AXJ
Excellent Jumper With Weaves (AKC)
MXJ
Master Jumper With Weaves (AKC)
U-AGI
Agility I (UKC)
U-AGII
Agility II (UKC)
U-ACH
Agility Champion (UKC)
U-ACHX
Agility Champion Excellent (UKC)
AD
Agility Dog (USDAA)
VAD
Veteran Agility Dog (USDAA)
VAAD
Veteran Advanced Agility Dog (USDAA)
VMAD
Veteran Master Agility Dog (USDAA)
VS
Veterans Snooker
VJ
Veterans Jumper
VG
Veterans Gambler
VPD
Veteran Performance Dog
AAD
Advanced Agility Dog (USDAA)
MAD
Master Agility Dog (USDAA)
SM
Snooker Master (USDAA)
GM
Gambler Master (USDAA)
PM
Pairs Master (USDAA)
JM
Jumpers Master (USDAA)
ADCH
Agility Dog Champion (USDAA)
ADC
Agility Dog of Canada (AAC)
AADC
Advanced Agility Dog of Canada (AAC)
MADC
Master Agility Dog of Canada (AAC)
O-, S-
Outstanding, Superior Peformance, prefixed to any NADAC title
NAC, NAC-V, NAC-JH
Novice Standard, Veterans, Junior Handler (NADAC)
OAC, OAC-V, OAC-JH
Open Standard, Veterans, Junior Handler (NADAC)
EAC, EAC-V, EAC-JH
Elite Standard, Veterans, Junior Handler (NADAC)
NGC, NGC-V, NCG-JH
Novice Gamblers, Veterans, Junior Handler (NADAC)
OGC, OGC-V, OCG-JH
Open Gamblers, Veterans, Junior Handler (NADAC)
EGC, EGC-V, ECG-JH
Elite Gamblers, Veterans, Junior Handler (NADAC)
NJC, NJC-V, NJC-JH
Novice Jumpers, Veterans, Junior Handler (NADAC)
OJC, OJC-V, OJC-JH
Open Jumpers, Veterans, Junior Handler (NADAC)
EJC, EJC-V, EJC-JH
Elite Jumpers, Veterans, Junior Handler (NADAC)
NATCh
Agility Trial Champion (NADAC)

Flyball Titles

FD
Flyball Dog
FDX
Flyball Dog Excellent
FDCh
Flyball Dog Champion
FM
Flyball Master
FMX
Flyball Master Excellent
FMCh
Flyball Master Champion
ONYX
Award (named after first recipient) based on points earned
FGDCh
Flyball Grand Champion

 Herding titles – AKC

HCH
Herding Champion (prefix)
HI
Herding Intermediate
HS
Herding Started
HT
Herding Tested
HX
Herding Excellent
PT
Pre-trial Tested

Herding titles – AHBA (American Herding Breeds Association)

HCT
Herding Capable Tested
* HTD1
Herding Trial Dog, first level
* HTD2
Herding Trial Dog, second level
* HTD3
Herding Trial Dog, third level
JHD
Junior Herd Dog
RD
Ranch Dog (dog has been evaluated by a judge while doing its routine farm tasks & certified to be a useful working dog)

* Always with suffix -s, -d, -c to indicate title earned on sheep, ducks or cattle. Titles earned separately on each type of stock.

Miscellaneous Titles

CGC
Canine Good Citizen Certificate
CH
Champion (prefix)
HIC
Herding Instinct Certified
TD
Therapy Dog
TDI
Therapy Dog International
TT
Temperment Tested by ATTS (or other official organizations)

Obedience Titles

CD
Companion Dog (AKC, CKC)
CDX
Companion Dog Excellent (AKC, CKC)
CT
Champion Tracker (a dog with a TD, TDX and VST) (AKC)
OTCh
Obedience Trial Champion (prefix) (AKC, CKC)
TD
Tracking Dog (AKC, CKC)
TDX
Tracking Dog Excellent (AKC, CKC)
U-CD
Companion Dog (prefix) (UKC)
U-CDX
Companion Dog Excellent (prefix) (UKC)
U-UD
Utility Dog (prefix) (UKC)
UD
Utility Dog (AKC, CKC)
UDT
Utility Dog title with a Tracking Dog title (AKC)
UDTX
Utility Dog title with a Tracking Dog Excellent title (AKC)
UDX
Utility Dog Excellent (AKC)
UDVST
Utility Dog title with a Variable Surface Tracking title (AKC)
VST
Variable Surface Tracking (AKC)

Other Dog-Related Acronyms

BJ
Broad Jump or Bar Jump (context)
CERF
Canine Eye Registry Foundation
DJ
Directed Jumping
DOR
Drop on Recall
F8
Figure Eight
HD
Hip Displasia (sometimes CHD)
OFA
Orthopedic Foundation for Animals
ROF
Retrieve on the Flat
ROH
Retrieve over the High Jump
ROM
Register of Merit