About Zuku
Our story is rooted in the belief that veterinary learning should be clear, focused, and empowering. Take a look at our company history and discover what drives Zuku forward today.

Our Story
In the early 2000s, Dr. Steve McLaughlin was a globe-trotting public health epidemiologist for the CDC, working across Africa, India, China, and beyond.
In 2004, while preparing for a grueling two-day Preventive Medicine certification exam, Dr. McLaughlin discovered the official advice was, “just know everything in these 65 textbooks and everything public-health relevant from the last five years.”
He recalls thinking, “I thought my head was going to explode. There had to be a better way.” This lit a spark. In 2007, he left the CDC and invested his retirement savings to launch Zuku Review.

What began as a scrappy project has since grown into the premier visual test prep tool for veterinary professionals—covering the NAVLE®, BCSE, and VTNE®. With case-based questions designed to mirror the real tests, Zuku helps learners move beyond memorization to true clinical thinking. We didn’t stop at test prep. In 2025, Zuku launched continuing education (CE) for veterinarians and veterinary technicians, offering expert-led content to keep busy professionals sharp. Today, Zuku is trusted by over 80,000 colleagues worldwide—and we’re just getting started.
Meet the rest of the team

Steven I McLaughlin, DVM, MPH, ACVPM
“Dr. Zuku” — Founder & CEO
Education
B.S. Oklahoma State, Biochemistry 1986
DVM, Cornell, Class 1991
MPH, Tulane 1997
Work History
1991-93, Mixed practice, Pulaski NY
1994-96 Peace Corps volunteer, Ecuador
1998-2007, US Centers for Disease Control, Epidemiologist, international health
2008-Present, Founder and president, Zuku Review
Professional Interests
Education, effective adult learning
Personal Interests
Cooking, foraging for mushrooms and hanging out with our two mutts
Fun Facts
I learned to forage for tasty edible mushrooms during the pandemic
Pets
Two shelter dogs: Saint (who isn’t) and Georgia Brown, a very serious girl
About
Dr. Mclaughlin is a graduate of Cornell School of Vet med, class of 91. He did mixed practice in northern NY on the shores of lake Ontario and in the high Andes as a Peace Corps volunteer in Ecuador, where he worked with campesino farmers and learned how not to ride a horse. As an epidemiologist “disease detective” for the U.S. Centers for Disease Control, Dr. Mclaughlin worked for 9 years on public health problems ranging from tuberculosis in prison inmates to polio in Nepal, elephantiasis in Haiti and Japanese encephalitis in China and India.
His lifelong interest in teaching and effective learning models led him to start the Zuku Review in 2007.

Nora Grenager, VMD, DACVIM
Director of Content and Senior Editor
Education
BA, Amherst College, Biology, 2000 (magna cum laude)
VMD, University of Pennsylvania, 2005 (magna cum laude)
DACVIM (large animal), Steinbeck Country Equine Clinic, 2010
Work history/CV highlights
Private practice, equine internal medicine specialist and general practitioner, 2005–2021
University work, locum 2016, 2021–present
Editor, Zuku review, 2016–present
Writing textbooks: Comparative Veterinary Anatomy, A Clinical Approach, 1st ed. (2021); Equine Emergencies, 5th ed (in process); and edited several additional textbooks
Professional Interests
Equine cardiology, respiratory disease, ophthalmology, and endocrine disease; writing and editing veterinary materials; education of students, veterinarians, technicians, and clients.
Personal Interests
Hiking/running/exploring the outdoors (especially with my dog!), traveling with family and friends, playing and listening to music, and reading.
Fun Facts
Even after decades of long clinical work days/weeks/years, she is still excited literally every time she sees an animal (especially horses!)
Pets
Riley, a gorgeous Australian shepherd/border collie mix, who lives her best life every day.
About
Growing up on a small farm in Pennsylvania, Dr. Grenager knew from a young age veterinary medicine was for her. During college she honed her leadership and outdoors skills doing a semester of sea kayaking and glacier mountaineering in Patagonia with the National Outdoor Leadership School, which also kicked off a serious desire to see the world. After graduating from UPenn in 2005, Dr. Grenager did her internship and equine internal medicine residency at Steinbeck Country Equine Clinic on the beautiful central coast of CA. Since then, she’s practiced in California, northern Virginia, Dubai, and most recently Ireland. She joined Zuku Review in 2016 and is thrilled that it allows her to balance her love of editing and teaching with clinical work. These days her laptop facilitates her editing and writing for Zuku, as well as the textbooks and articles on veterinary medicine, from many cool locations.

Jen Mahon, DVM, DACVECC
Small Animal Editor
Education
BA in Biology, College of the Holy Cross, 2002
DVM with Thesis, Cummings School of Veterinary Medicine at Tufts University, 2012
DACVECC, Cummings School of Veterinary Medicine at Tufts University, 2016
Work history/CV highlights
University and nights/weekends ER/ICU veterinary technician 2002-2008
Criticalist in private practice in Dallas, TX from 2016-2021
Owner of Triskele Veterinary and Writing Services 2021 to present
Locum ECC coverage, education, writing/editing
Small animal writing/editing for Zuku Review, 2023-present
Professional Interests
Shock, peritonitis, hemorrhage, polytrauma, respiratory disease, vasopressor dependence, dysnatremias, and critical care anesthesia. Engaging, memorable education across all tiers of the care team, from owners to other specialists.
Personal Interests
Weight lifting, bird watching, pole fitness, dance and painting.
Fun Facts
I was the subject of a case report when I was 13 years old! I had accelerated carpal growth plates, which fused the pisiform and hamate bones, necessitating excision.
Pets
My cat, The Witten, has become my travel buddy. She has logged many miles in the car and the air with poise, naps, and (so far) no excretion accidents. She has befriended many TSA agents, and her favorite snack is cheese. Thus far no one has asked her to pilot the plane.
About
Jen Mahon is a locum criticalist based out of SC, where she lives right next to a beautiful river and gets to watch nature in her backyard. She attended veterinary school and residency at Tufts University. After working as a criticalist for about five years in private practice in Dallas, TX, she started her own business, which is exactly as scary, thrilling, and fulfilling as one might expect! She provides locum critical care coverage for various private practices in SC and TX. Jen has a deep passion for teaching; she has lectured at various conferences and loves doing locum work at academic institutions. For her, “living la vida locum” provides the freedom to balance teaching and clinical work. She started writing, editing, and presenting with Zuku Review in 2023.

Liz Brock, DVM, MS
Farm Animal
Education
BS, University of New Hampshire, 2001
MS, Cornell University in Soil Science, 2006
DVM, Cornell University, 2015
Work history/CV highlights
Northwest Veterinary Associates, 2015-2020
UNH Clinical Assistant Professor Animal Science, 2020 – present
AABP Board of Directors, 2018 – present
Professional Interests
Preventative bovine medicine, reproduction, precision agricultural technologies, epidemiology. Advocating for agriculture, social/emotional health of farmers, and mentoring non-traditional cattle veterinarians.
Personal Interests
Chasing my kids up and down mountains (hiking/skiing), paddling them across lakes (canoeing and rowing), watching sporting events and live music. Reading in quiet moments when they infrequently occur.
Fun Facts
After graduating with my BS and feeling completely lost as to what came next, I hiked the Long Trail, which runs 272 miles the length of Vermont from Massachusetts to Canada.
Pets
Black lab COVID puppy who is now a terrible threenager – Tuukka. Desperately want a mini-donk and some goats, but we live in a swamp that would rot their feet off.
About
Dr. Brock took the long way to a veterinary career. After graduating with a pre-vet degree from UNH, she worked instead at the intersection of water quality and agriculture for ten years, including a brief stint as a lobbyist. At the ripe old age of 32, she decided her future was in fact meant to be in veterinary medicine. Dr. Brock was a food animal veterinarian for 5 years in Northwestern Vermont before returning to teach undergraduate animal science at UNH. She continues to care for a handful of dairy herds so that she doesn’t lose all those palpating muscles. She lives in Southern Maine with her husband and two rambunctious boys that keep her active and outside.

Catherine Reiss, DVM
Small Animal Editor
Education
BS, Cornell University, 2001 (magna cum laude)
DVM, Cornell University, 2006
Work history/CV highlights
University of Georgia small animal rotating internship, 2006-07
Cornell University small animal emergency and critical care internship, 2007-08
Private practice, small animal emergency care and critical care 2008-present
Local and international spay & neuter programs volunteer/employee 2004-present
SA Editor, Zuku review, 2023–present
Professional Interests
Emergency surgery, trauma, shock, ultrasound, and rare diseases/conditions; High quality/high volume spay & neuter; teaching/mentoring new grads and vet students.
Personal Interests
Travel, hiking and backpacking, running, horseback riding, yoga, gardening/farm work, and especially time with family.
Fun Facts
After spending a considerable amount of time perfecting her cheese-making skills, she decided shopping at Trader Joe’s was easier.
About
Dr. Reiss fell in love with upstate New York and Cornell University during a summer high school program and went on to spend a decade living and learning there. A year volunteering at a large mammal rehabilitation facility in Arizona and another at University of George for her first internship provided brief respites from the Cornell winters. In 2009, she and her husband moved to slightly warmer climates to pursue private practice in Northern Virginia and fulfill the life-long goal of living on a farm. When not working long shifts in the ER, Dr. Reiss travels as much as possible, including for international spay and neuter projects.
Pets
Too many…dogs, cats, horses, donkeys, pigs, goats, chickens, fish, and sometimes bees

Dwight Harriman
Customer Support
Education
Degree in anthropology with honors from Georgia State University
About
Dwight Harriman is a valued member of the Customer Support team at Zuku Learning. He ensures clear communication and timely assistance for users, and his commitment helps maintain an efficient and supportive learning environment. He has s degree in anthropology with honors from Georgia State University.

Sonja Frohner
Customer & Team Support
About
Sonja Frohner is part of the Customer & Team Support team at Zuku Learning. She provides friendly, reliable assistance to both customers and staff, and her dedication helps create a smooth and positive learning experience for everyone.