| ABN | Already been neutered |
| ABS | Already been spayed |
| Community cat | A free-roaming cat living outside. Includes feral and stray/friendly |
| Cryptorchid | A male cat having one or two undescended testicals |
| DLH | Domestic long hair |
| DMH | Domestic medium hair |
| DSH | Domestic short hair |
| Feral cat | A cat that is wild or unsocialized to people |
| Free-roaming cat | A cat living outside. Could be feral or stray/friendly |
| FVRCP | A 3-in-1 vaccine for cats against feline rhinotracheitis virus, calicivirus and panleukopenia (distemper) |
| Neuter | Castration of a male cat |
| Polydactyl | Having additional “fingers” or “toes” |
| Predation | The hunting and killing of prey |
| RTF/RTC | Return to Field/Return to Colony |
| S/N | Spay/Neuter |
| SNR | Shelter-Neuter-Return |
| Spay | Hysterectomy or removal of uterus and ovaries of a female cat |
| Stray cat | A friendly cat that is lost or abandoned |
| TNR | Trap-Neuter-Return (not Release) |
| TNRM | Trap-Neuter-Return-Monitor |
| TNVR | Trap-Neuter-Vaccinate-Return |
| Vacuum Effect | When species are removed from an area, a vacuum is created whereby new members of that species move in |
| Working cat | A cat relocated to new guardians for the primary purpose of deterring rodents |
