| Abbreviation | Definition |
|---|---|
| SPTD | Wrst Plains SPadefoot Toad |
| SPVRC | SouthPaws Veterinary Referral Center |
| SPVS | Society of Practicing Veterinary Surgeons (home page) |
| SRDA | Search and Rescue Dog Association |
| SRK | Space Rack |
| SRMA | Steroid Responsive Meningitis |
| SRVC | Stevenson Ranch Veterinary Center |
| SSAB | Society for the Study of Animal Breeding |
| SSAR | Society for the Study of Amphibians and Reptiles |
| SSAVA | Swedish Small Animal Veterinary Association |
| SSP | Species Survival Plan |
| SSPCA | Scottish Society for the Prevention of Cruelty to Animals |
| SSR | Society for the Study of Reproduction |
| SSSTLA | Society of Study of the Science and Technology of Laboratory Animals |
| SSVA | South Shore Veterinary Associates |
| STA | Specialist Training Authority (human, UK) |
| STD | Sheep Transmitted Disease |
| STKC | Sierra-Tuolumne Kennel Club, Inc. |
| STP | Society of Toxicologic Pathology |
| STVM | Society for Tropical Veterinary Medicine |