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| NAME | JURISDICTION OF INCORPORATION |
| Patterson Dental Holdings, Inc. | Minnesota |
| Patterson Dental Supply, Inc. | Minnesota |
| Dolphin Imaging Systems, LLC | Delaware |
| Dolphin Practice Management, LLC | Delaware |
| Direct Dental Supply Co. | Nevada |
| Patterson Technology Center, Inc. | Minnesota |
| Patterson Dental Canada Inc. | Canada |
| PCI Limited I, LLC | Delaware |
| PCI Limited II, LLC | Delaware |
| PCI Two Limited Partnership | England |
| PDC Funding Company, LLC | Minnesota |
| PDC Funding Company II, LLC | Minnesota |
| PDC Funding Company III, LLC | Minnesota |
| PDC Funding Company IV, LLC | Minnesota |
| Animal Health International, Inc. | Colorado |
| Aspen Veterinary Resources, Ltd. | Colorado |
| Hawaii Mega-Cor., Inc. | Hawaii |
| Turnkey Computer Systems, LLC | Texas |
| Advanced Veterinary Services, LLC | Colorado |
| AVS West, Inc. | California |
| IAH Properties, LLC | Colorado |
| Indiana Animal Health, LLC | Colorado |
| Patterson Veterinary Supply, Inc. | Minnesota |
| Patterson Teleradiology, LLC | Colorado |
| Patterson Management, LP | Minnesota |
| PDC Holdco (Canada), Inc. | Canada |
| Kane Veterinary Supplies, Ltd. | Canada |
| Patterson (PDCO) Holdings UK Limited | England and Wales |
| National Veterinary Services Limited | England and Wales |
| Patterson Logistics Services, Inc. | Minnesota |
| Dairy Tech, LLC | Minnesota |
| RSVP & ACT, LLC | Minnesota |
| RSVP Services, LLC | Minnesota |