Nancy A. Dreschel

Nancy A. Dreschel

  • Associate Teaching Professor, Small Animal Science
  • Undergraduate Adviser
  • Adviser for the Small and Exotic Animals Club (SEAC)
  • Coordinator/Instructor Roar For More: Susquehanna Service Dogs University Park Puppy Raising Club
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 150S Be a Master Student (first-year seminar)
  • AN SC 215 Pets in Society (On-line and Hybrid)
  • AN SC 305 Companion Animal Nutrition and Management
  • AN SC 415 Companion Animal Behavior 


  • Associate Teaching Professor, Department of Animal Science, Penn State University 2018- Present
  • Instructor, Department of Animal Science, Penn State University 2004- 2018
  • Project Coordinator, Research Assistant, Teaching Assistant, Department of Biobehavioral Health, Penn State University  1999- 2004
  • Small Animal and Mixed Practice Veterinarian 1989- 2004


The influence of pretreatment respiratory sinus arrhythmia dimensions on trauma-focused cognitive behavioral therapy outcomes: Findings from a randomized controlled feasibility trial
Journal of Traumatic Stress, Brown, Michelle P., Shenk, Chad E., Allen, Brian, Dunning, Emily D., Lombera, Metzli A., Bucher, Ashley M., Dreschel, Nancy, 2024

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, Johnny, Brown, Michelle, Bucher, Ashley, Chen*, Michelle, Chen, Michelle, Olson, Anneke, 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