| Abbreviation | Definition |
|---|---|
| BLM | Black Lab Male |
| Blm | Black Labs Matter |
| BLM | Brown Labs Matter |
| BM | Belgian Mastiff |
| BMD | Benchill Mad Dogs |
| BMD | Bernese Mountain Dog |
| BMDCC | Bernese Mountain Dog Club of Canada |
| BMDR | Bear Mountain Dog Rescue |
| BOAD | Boss Of All Dogs |
| BOB | Best Of Breed |
| BSCA | Belgian Sheepdog Club of America |
| BSD | Belgian Shepherd Dog |
| BSD | Bungou Stray Dogs |
| BSL | Breed Specfic Law |
| BT | Boston Terrier |
| BTC | Bluetick Coonhound |
| BTCN | Bull Terrier Club Nederland |
| BTFD | Brain Training For Dogs |
| BTRF | Boston Terrier Rescue France |
| BTTC | Boston Terrier Club of Connecticut |