Nancy A. Dreschel

Nancy A. Dreschel

  • Associate Teaching Professor, Small Animal Science
  • Undergraduate Adviser
  • Adviser for the Small and Exotic Animals Club (SEAC)
312 Agricultural Sciences and Industries Building
University Park, PA 16802

Areas of Expertise

  • Companion Animal Science
  • Animal Behavior
  • Animal Welfare and Stress
  • Veterinary Medicine
  • Online teaching


  • Ph.D., Biobehavioral Health, The Pennsylvania State University
  • D.V.M., Cornell University, New York State College of Veterinary Medicine
  • B.S., Animal Science, Cornell University


  • Animal Behavior, Working Dogs, Human-Animal Interactions
  • Veterinary Medicine
  • On-line teaching and learning

Classes Taught

  • An Sc 215 Pets in Society (On-line and Residence)
  • An Sc 305 Companion Animal Nutrition and Management
  • An Sc 415 Companion Animal Behavior 
  • An Sc 419W Applied Animal Welfare


  • Instructor, Department of Animal Science, Penn State University 2004- Present
  • Project Coordinator, Research Assistant, Teaching Assistant, Department of Biobehavioral Health, Penn State University  1999- 2004
  • Small Animal and Mixed Practice Veterinarian 1989- 2004

Selected Publications

  • Cobb, M., Iskandarani, K., Chinchilli, V., Dreschel, N.A. (2016) A systematic review and meta-analysis of salivary cortisol measurement in domestic canines.  Domestic Animal Endocrinology, 57: 31-42.

  • Dreschel, N.A., Granger, D.A. (2016) Advancing the Social Neuroscience of Human-Animal Interaction:The Role of Salivary Bioscience. In L. Freund, S. McCune, P. McCardle, L. Esposito, & N. Gee (Eds.).  Social Neuroscience and Human-Animal Interaction, Washington, DC: American Psychological Association.

  • Morrow, M., Ottobre, J., Ottobre, A., Neville, P., St-Pierre, N., Dreschel, N., Pate, J.L.  (2015) Breed-dependent differences in the onset of fear-related avoidance behavior in puppies. Journal of veterinary behavior, 10: 286-294.

  • Dreschel, N.A. The effects of fear and anxiety on health and lifespan in pet dogs. Applied Animal Behaviour Science, 125 (2010): 157-162.
  • Vanderman, K.S., Dreschel, N.A. , Swinker, A.M., Kniffen, D.M., Radharakrishna, R.B., Werner, J.R., Jedrzejewski, E.A.  Equine Veterinarians' and Health Care Professionals' Concerns Related to the Implementation of the National Equine Identification System. Journal of Equine Veterinary Science, 29 (2009): 823-827. 
  • Dreschel, N.A. & Granger, D.A. Methods of collection for salivary cortisol measurement in dogs. Hormones and Behavior, 55 (2009): 163-168.
  • Dreschel, N.A. & Granger, D.A. Physiological and behavioral reactivity to stress in thunderstorm-phobic dogs and their caregivers. Applied Animal Behaviour Science, 95 (2005): 153-168.
  • Hood, Kathryn E., Dreschel, Nancy A. , Granger, Douglas A.. Maternal Behavior Changes after Immune Challenge of Neonates with Developmental Effects on Adult Social Behavior. Developmental Psychobiology, 42 (2003):17-34.


Service dogs: A scoping review of interdisciplinary research
People and Animals: The International Journal of Research and Practice, Pierce, K., Dreschel, N, 2023

Service dogs, therapy dogs, emotional support animals... What's the difference?
Keystone Veterinarian- Pennsylvania Veterinary Medical Association, Dreschel, Nancy, 2022

The Importance of Evaluating Positive Welfare Characteristics and Temperament in Working Therapy Dogs
Frontiers in Veterinary Science, Miller, S, Serpell, J, Dalton, K, Waite, K, Morris, D, Redding, L, Dreschel, N, Davis, M, 2022

Respiratory Sinus Arrhythmia Change during Trauma-Focused Cognitive-Behavioral Therapy: Results from a Randomized Controlled Feasibility Trial
Research on Child and Adolescent Psychopathology, Shenk, Chad, Allen, Brian, Dreschel, N, Wang, M, Felt*, John, Felt, John M., Brown, Michelle, Bucher, Ashley, Chen*, Michelle, Chen, Michelle J., Olson, Anneke E., Olson*, Anneke, 2022

Integrating Animal-Assisted Therapy Into TF-CBT for Abused Youth With PTSD: A Randomized Controlled Feasibility Trial
Child Maltreatment, Allen, Brian, Shenk, Chad E., Dreschel, N, Wang, Ming, Bucher, Ashley, Desir, Michelle, Chen, Michelle, Grabowski, Simonie R., 2021

Human-dog bond correlates of increased dog-walking
Obesity, Chen, E, French, M, Ozoglu, S, Cripe, A, Lawrence, U, Dreschel, N, 2020

Do dogs really see in just black and white?
The Conversation, Dreschel, N, 2020

A systematic review and meta-analysis of salivary cortisol measurement in domestic canines
Domestic Animal Endocrinology, Cobb, M. L., Iskandarani, K., Chinchilli, V. M., Dreschel, N. A., 2016

Advancing the social neuroscience of human-animal interaction: The role of salivary bioscience, Dreschel, N, Granger, D, 2016

Breed-dependent differences in the onset of fear-related avoidance behavior in puppies
Journal of Veterinary Behavior, Morrow, Mary, Ottobre, Joseph, Ottobre, Ann, Neville, Peter, St-Pierre, Normand, Dreschel, Nancy, Pate, Joy L., 2015

A meta-analysis of salivary cortisol measurement in domestic canines
Journal of Veterinary Behavior: Clinical Applications and Research, Dreschel, Nancy, Cobb, M, Iskandarani, K, Chinchilli, V, 2014

Stress in shelter dogs and the use of foster care to improve animal welfare
Journal of Veterinary Behavior: Clinical Applications and Research, Fehringer, A, Dreschel, Nancy, 2014