| Naics index | Naics index description |
|---|---|
| 813311 | Senior citizens advocacy organizations |
| 813311 | Veterans' rights organizations |
| 813312 | Animal rights organizations |
| 813312 | Animal welfare associations or leagues |
| 813312 | Conservation advocacy organizations |
| 813312 | Environmental advocacy organizations |
| 813312 | Humane societies without animal shelters |
| 813312 | Natural resource preservation organizations |
| 813312 | Wildlife preservation organizations |
| 813319 | Accident prevention associations |