Ann Hohenhaus,

DVM, DACVIM (SAIM, Oncology)
Role: Senior Veterinarian
Specialist in Oncology
Director of Pet Health Information
Department: Oncology
Dr. Ann Hohenhaus of the Animal Medical Center in New York City

Dr. Ann Hohenhaus is a third generation veterinarian who is also double board certified by the American College of Veterinary Internal Medicine. She is an avid blogger and has written for multiple media outlets including and In 2019, Dr. Hohenhaus was honored by the New York City Veterinary Medical Association with their Outstanding Service to Veterinary Medicine Award. Previously, she received the DeBakey Award for Excellence in Journalism from the Foundation for Biomedical Research for “Dogs Go To Bat Against Lou Gehrig’s Disease.” Dr. Hohenhaus has also created content for publications such as Ladies Home Journal and Real Simple Magazine.

Dr. Hohenhaus is an active participant in AMC’s research mission and has written extensively in the veterinary literature. She is listed as an author on numerous publications in PubMed in the disciplines of oncology, internal medicine, and transfusion medicine, including: squamous cell carcinoma, mast cell tumors, melanoma, exocrine pancreatic insufficiency, and anemia. She authored many veterinary textbook chapters and is currently investigating immunotherapy for hemangiosarcoma in dogs. Dr. Hohenhaus lectures nationally and internationally, most recently in the Kuala Lumpur, Malaysia and Capetown, South Africa.

In her spare time, Dr. Hohenhaus raises foster kittens as a member of the ASPCA Foster Kitten Team.

Board certifications:


  • BS, with honors, Phi Beta Kappa, St. Mary’s College of Maryland, St. Mary’s City, Maryland
  • DVM, Cornell University, Ithaca, New York

Recent Publications:

Air gun ballistic projectile lodged in the interventricular septum of an asymptomatic dog. Fox PR, Hohenhaus AE, Kharbush R. CASE; 2020 (Sept 14)

Giant pericardial-occupying compressive primary cardiac hemangiosarcoma in a cat. Herrold EJ, Donovan TA, Hohenhaus AE, Fox PR. J Vet Cardiol. 2020 Jun;29:54-59. doi: 10.1016/j.jvc.2020.04.004. Epub 2020 May 5.PMID: 32497967

Winzelberg Olson S, Hohenhaus AE.  Feline non-regenerative anemia: Diagnostic and treatment recommendations.  J Feline Med Surg. 2019 Jul;21(7):615-631.

Diessner BJ, Marko TA, Scott RM, Eckert AL, Stuebner KM, Hohenhaus AE, Selting KA, Largaespada DA, Modiano JF, Spector LG.   A comparison of risk factors for metastasis at diagnosis in humans and dogs with osteosarcoma.  Cancer Med. 2019 Jun;8(6):3216-3226.

Wright KZ, Hohenhaus AE, Verrilli AM, Vaughan-Wasser S.Feline large-cell lymphoma following previous treatment for small-cell gastrointestinal lymphoma: incidence, clinical signs, clinicopathologic data, treatment of a secondary malignancy, response and survival. J Feline Med Surg. 2018 Jun 1:1098612X18779870. doi: 10.1177/1098612X18779870.

Sylvane B, Prittie J, Hohenhaus AE, Tozier E.Effect of cross-match on packed cell volume after transfusion of packed red blood cells in transfusion-naïve anemic cats.J Vet Intern Med. 2018 May;32(3):1077-1083.

Verrilli AM, Hohenhaus AE, Le Roux AB, Donovan TA. What Is Your Diagnosis?: Primary pulmonary neoplasia. J Am Vet Med Assoc. 2016 Mar 1;248(5):493-6.

Hohenhaus AE, Kelsey JL, Haddad J, Barber L, Palmisano M, Farrelly J, Soucy A. Canine Cutaneous and Subcutaneous Soft Tissue Sarcoma: An Evidence-Based Review of Case Management. J Am Anim Hosp Assoc. 2016 Mar-Apr;52(2):77-89.