Menurut OIE (Organisasi Internasional Kesehatan Hewan), ada 33 bidang kerja Dokter Hewan di 110 negara di dunia, antara lain:
1. Food Technology
2. Food Inspection
3. Food Hygiene
4. Consumer Protection
5. Laboratories
6. Legislation
7. Artificial Breeding
8. Zoos
9. Laboratory animal
10. Animal Welfare
11. Zoonosis
12. Veterinary Medicine
13. Clinical Health Care
14. Disease Control
15. Exotic control
16. Epidemiology
17. Quarantine
18. Livestock and Animal Product
19. Aqua Culture
20. Wildlife
21. Environtmental Protection
22. Nutrition
23. Parasitology
24. Teaching
25. Research and Development
26. Livestock marketing
27. Publication
28. Economics
29. Import Animal Product
30. Livestock industry organization
31. Administration
32. International cooperation
33. Profesional Organization
Berdasarkan hal tersebut peran dokter hewan masih sangat dibutuhkan di dunia.
