| Abbreviation | Definition |
|---|---|
| WPHR | Western Pleasure Horse Registry |
| WPKP | number of Wolves Per Kilogram of Prey |
| WPU | Waterfowl Production Unit |
| WPU | Wildlife Pathology Unit |
| WPVC | Washington Park Veterinary Clinic |
| WPVH | Winter Park Veterinary Hospital |
| WPZ | Woodland Park Zoo, Seattle, Washington |
| WQH | Weaver Quarter Horse |
| WQH | Wilderness Quarter Horse |
| WR | White Rhino |
| WRAH | Wheat Ridge Animal Hospital |
| WRAL | Western Riding Association Luxembourg |
| WRC | Working Retriever Central |
| WRLR | World Reference Laboratory for Rinderpest |
| WRNC | Wildlife Rehabilitators of North Carolina |
| WRNT | Weim Rescue North Texas |
| WRO | Western Rottweiler Owners |
| WRPC | Western Reserve Poodle Club - Cleveland, Ohio |
| WRPRC | Wisconsin Regional Primate Research Center |
| WRR | Wildlife Rehabilitation and Release |