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Dr. Angela Witzel Rollins is a Diplomate and former President of the American College of Veterinary Nutrition. She is currently President-Elect of the American Academy of Veterinary Nutrition.


Dr. Rollins is a Clinical Associate Professor of Nutrition at the University of Tennessee Veterinary Medical Center, where she also attained her DVM, PhD, and residency training.


Dr. Rollins developed the clinical nutrition service at the University of Tennessee, which maintains one of the highest academic caseloads in the United States. Her research focuses primarily on obesity physiology, prevention, and treatment in dogs and cats.

Learn more about Dr. Angela Witzel Rollins.

Angela Witzel Rollins



  • University of Tennessee, Knoxville TN - 2000
    Degree: Honors Bachelor of Science, Summa Cum Laude
    Major: Ecology and Experimental Biology

  • University of Tennessee, Knoxville TN - 2004
    Degree: Doctor of Veterinary Medicine

  • University of Tennessee, Knoxville TN - 2009
    Degree: Doctor of Philosophy
    Major: Comparative and Experimental Medicine with concentrations in nutrition and endocrinology


Non-controlled, open-label clinical trial to assess the effectiveness of a dietetic food on pruritus and dermatologic scoring in atopic dogs. 

Witzel-Rollins, A., Murphy, M., Becvarova, I. et al. BMC Vet Res 15, 220 (2019) doi:10.1186/s12917-019-1929-2

Quantified water intake in laboratory cats from still, free-falling and circulating water bowls, and its effects on selected urinary parameters. 

Robbins, M. T., Cline, M. G., Bartges, J. W., Felty, E., Saker, K. E., Bastian, R., & Witzel, A. L. (2019). Journal of Feline Medicine and Surgery, 21(8), 682–690. 

Prevalence of asymptomatic urinary tract infections in morbidly obese dogs. 

Wynn SG, Witzel AL, Bartges JW, Moyers TS, Kirk CA. 2016. PeerJ 4:e1711

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