| Abbreviation | Definition |
|---|---|
| FDX | Field Dog Excellent |
| FDX | Flyball Dog Excellent |
| FGDCh | Flyball Grand Champion |
| FIC | Federation of International Canines |
| FIDO | Facilitating Interactions for Dogs with Occupations |
| FIDO | First In Dog Obedience |
| FIDO | Free Inmate Dog Obedience |
| FIDO | Friends Involved in Dog Outreach |
| FIDO | Friends of Indianapolis Dogs Outside |
| FIGS | Friends of Italian GreyhoundS |
| FLDR | Florida Little Dog Rescue |
| FLOYD | F***ing Little Onry Yippie Dog |
| FLOYD | Fucking Little Onry Yippie Dog |
| FLSA | Fat Little Short Animal |
| FM | Flyball Master |
| FMCh | Flyball Master Champion |
| FMX | Flyball Master Excellent |
| FODM | Friends of Dog Mountain |
| FTFD | Flea and Tick wormer For Dogs |
| FYL | Female Yellow Labrador |