American College of Zoological Medicine (ACZM): How to Become Board-Certified

ACZM certifies veterinarians in zoological medicine — a discipline its site describes as applying clinical medicine and surgery, scientific advancement, and disease ecology to the health, wellbeing, and conservation of animal species in zoo, aquatic, wildlife, and zoological companion settings.

AVMA lists four specialties under the college: aquatic animal medicine, zoo animal medicine, zoological companion animal medicine, and wildlife population health.

The credential's full title is Diplomate of the American College of Zoological Medicine (Board Certified Specialist in Zoological Medicine).

ACZM describes its diplomates as zoo and wildlife veterinarians, teachers, researchers, and government officials.

AVMA counts 371 active diplomates as of December 31, 2025, printed as a single college-wide figure with no per-specialty split in the sources on file.

Eligibility starts with a veterinary credential: candidates must be a graduate of an AVMA-accredited veterinary school, hold an ECFVG certificate, or otherwise be legally qualified to practice veterinary medicine.

The training requirement is stated just as plainly: three years of professional training in zoological medicine at 100%, taken after graduation from veterinary school, in an ACZM-approved training program supervised by one or more ACZM Diplomates.

Every clause matters for planning.

The years count only at full-time intensity, only after graduation, and only in a program the college has approved, with diplomate supervision built into the definition.

Experience gathered outside that frame is not what this route counts — that is precisely the gap the Experiential Route exists to fill.

Candidates who have not trained in an ACZM-compliant training program can still qualify through the Experiential Route.

It asks for six years of professional training and experience in zoological medicine after veterinary school, at 100%, or the equivalent — the college's own example is 12 years at 50% — along with two ACZM Diplomates formally identified as willing to serve as mentors.

On the equivalence clause: a half-time career simply needs more calendar years to reach the same total.

The mentor step is a requirement in its own right, with its own timing and paperwork: the college's credentials page has the mentors formally identified by a set date in the year before the exam, with acceptance letters from both the candidate and the mentors, so confirm the current dates and forms with the college before counting on the route.

The credentials bar is specific: a candidate must be first author on at least three publications relevant to zoological medicine in refereed journals, and no more than two of them may be case reports.

That is a floor, not the full rule: the college's credentials page adds that the remaining publication must be an original investigation, that all three must already be accepted when the application is made, and that book chapters and review articles do not count.

The Day 1 Qualifying Examination is scored using an aggregate mean score across all 5 sections combined, under a compensatory scoring model in place since 2019.

For the 2025 examination, the college stated the exam would be administered virtually, at the candidate's home location or location of choice, using the ExamSoft testing application — confirm the administration format for the year you sit.

The credential also carries upkeep: diplomates who credential after 2016 must maintain ACZM Diplomate status every 10 years through maintenance of certification, accruing points from clinical and non-clinical professional activities rather than sitting the exam again.