| Abbreviation | Definition |
|---|---|
| ATF | Animal Task Force |
| ATL | Animal Tissue Lysis |
| ATLA | Alternatives to Laboratory Animals |
| ATN | Animal Telemetry Network |
| ATOL | Animal Trait Ontology for Livestock |
| AUAAA | Adelaide University Aquatic Animal Association |
| AUAAA | Adelaide University Aquatic Animals Association |
| AUDF | Animal Use Data Forms |
| AUE | Animal Unit Equivalents |
| AUWA | Audubon's Warbler |
| AVHO | Animal Veterinary Hospital Of Orlando |
| AVRI | Animal Venom Research International |
| AWA | Animal Welfare Approved |
| AWA | Animal Welfare Association |
| AWAA | Arctic Wolf Animal Agency |
| AWAC | Animal Welfare Advisory Committee |
| AWARE | Atlanta Wild Animal Rescue Effort |
| AWEC | Animal Welfare Export Certificates |
| AWF | Animal Welfare Foundation |
| AWF | Animal Wellness Foundation |