| Abbreviation | Definition |
|---|---|
| AAC | Agility Association of Canada |
| AAD | Advanced Agility Dog |
| AADC | Advanced Agility Dog of Canada |
| AADI | Autism Awareness Dogs Ireland |
| AAOD | An Act of Dog |
| AAS | Amazing Animal Service |
| AATD | Australian Agility Team Dog |
| ABCDEFGHIJKLMNOPQRSTUVWXYZ | Animals be crazy dogs eating fish gut. Hamilton in jog...km like monkeys noon O P queen Robert snake |
| ABD | American Bull Dog |
| ABLA | American Belgian Laekenois Association |
| ABMC | American Belgian Malinois Club |
| ACA | American Canine Association |
| ACD | Any Cute Dog |
| ACD | Australian Cattle Dog |
| ACDC | Australian Cattle Dog Club |
| ACDR | Arizona Cattle Dog Rescue |
| ACDS | Athens County Dog Shelter |
| ACDT | Absolute Control Dog Training |
| ACET | Agility Center of East Tennessee |
| ACS | American Cocker Spaniel |