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This profile was last updated on 1/27/16  and contains information from public web pages and contributions from the ZoomInfo community.

Dr. Tom R. Lenz

Wrong Dr. Tom R. Lenz?

Principal Scientist Biology

Phone: (617) ***-****  
Email: t***@***.com
Local Address:  Cambridge , Massachusetts , United States
Pfizer Inc
235 E 42Nd St
New York , New York 10017
United States

Company Description: Pfizer Inc. (Pfizer) is a research-based, global biopharmaceutical company. The Company applies science and its global resources to improve health and well-being at...   more

Employment History

Board Memberships and Affiliations


  • DVM MS
  • DVM
  • MS
  • master of science
    Texas A&M University
186 Total References
Web References
Equine Resources International, LLC: Horse Industry Marketing - QUEST(R) and QUEST(R) PLUS Provide Safe and Effective Parasite Protection in Horses, 12 Oct 2010 [cached]
"Adding QUEST or QUEST PLUS to a deworming program is a safe, convenient and effective way to ensure parasite control, " said Thomas Lenz, DVM, MS, Diplomate, ACT, Senior Director, Equine Veterinary Services at Pfizer Animal Health.
"QUEST and QUEST PLUS offer a variety of benefits to any deworming program," said Dr. Lenz.
Unwanted Horse Coalition, 27 Aug 2013 [cached]
Dr. Tom Lenz, representative of Zoetis said, "Zoetis is pleased to contribute to the UHC's Operation Gelding program.
Several factors complicate the ability to ..., 21 Aug 2014 [cached]
Several factors complicate the ability to find solutions to the unwanted horse and equine welfare issues, from urbanization to "the public's love affair with the horse," Lenz said.
Photo: Thinkstock
It's a statement that Tom Lenz, DVM, MS, Dipl. ACT, has said before, and it's one he'll say again: "The more you know about unwanted horses, the more complicated the issue becomes."
That sentiment rings true for equine welfare in general, something Lenz said the public began taking interest in back in the early 2000s, when they learned that American processing plants were slaughtering so-called unwanted horses for human consumption in foreign countries. Following public outcry, U.S. horse processing was eventually shuttered.
But the public's interest in horse welfare didn't stop there. In fact, it's continued through to the present day and will likely remain in the future. So what have we learned about equine welfare since the issue first gained national attention? Lenz, senior director of equine veterinary services for Zoetis and former chairman of the Unwanted Horse Council, shared his thoughts on the lessons learned during a University of Kentucky Department of Veterinary Science Equine Diagnostic and Research Seminar.
Important Points to Remember
Before one can fully understand the equine welfare issues currently facing the horse industry, there are a few important points to remember. Tom Lenz, DVM, MS, Dipl.
"We're a pretty smart group of people," Lenz said of the veterinarians and other horse industry leaders who've worked to improve equine welfare throughout the years.
Lenz said several factors complicate our ability to find solutions to the unwanted horse and equine welfare issues, including:
Differences in opinion regarding whether we should consider horses livestock or companion animals (Lenz notes that many horse industry members consider horses livestock, as there are generally more funds available for research on disease control for livestock species as opposed to companion animal species); The ongoing debate about whether horses should be processed for meat; Aggressive campaigns by animal activist groups; Urbanization (As urban populations rise, farm and rural populations decline, Lenz said; further, many urbanites don't have a good understanding about how to care for large animals); and Possibly the most complicating factor, the American public's love affair with the horse (in other words, uninformed people with few to no ties to the equine industry care for horses and want to have a voice in how they are treated).
But, based on these complicating factors, Lenz said we've learned some things that could help lead to solutions in the future.
What We've Learned
Lenz said the primary take-away he's come home with is that each person's views on animal welfare are "conditioned by our personal knowledge base and life experiences."
For example, Lenz said he grew up in a situation where his family's horses lived outside all day, every day, unless they were foaling, sick, or injured. On the other hand, his wife, also a veterinarian, grew up with show horses that spent much of their time in well-maintained stalls. As a result, Lenz said he believes horses are healthier if they can spend as much time outside as possible, while his wife thinks horses have better welfare if they're housed in well-maintained stalls for part of the day, especially during the winter.
"We all look at this through different eyes," he said, "and there's not a right or wrong answer."
Lenz also said he's learned that it's crucial not to focus too closely on one single welfare criteria but, rather, to look at the whole picture.
He used chickens to illustrate this point:
While chickens housed in laying cages have more movement restrictions than house chickens or free-range chickens, he said, they also have easy access to food and water, are easily observed, don't get tangled up in aggressive interactions with other chickens, and have minimal disease. Housed chickens, on the other hand, have more room to move and access to feed and water, but there's a higher incidence of aggression and cannibalism between birds; it's difficult to monitor individual chickens; and there's an increased disease risk compared to chickens housed in laying cages. And finally, he said, while free-range chickens have large areas to roam and enclosures for sleeping and eating, they tend to be aggressive and cannibalistic; they're exposed to the elements, pests, and predators; and they have an increased disease risk because they're consuming whatever they can on the ground.
So, which group of chickens experience the best welfare?
"Overemphasizing a single criteria-such as how much room chickens have to move-can actually backfire and cause welfare problems in other areas, such as nutrition, disease control, etc.," Lenz said "The answer lies somewhere in the middle."
Lenz said he's also learned that animal welfare is genuinely important to people on all "sides" of the issue-everyone genuinely cares for animals.
People in animal-related businesses-such as veterinarians and farmers-care for their animals because it's how they make a living and tend to use facts to make decisions rather than emotions, Lenz said. These individuals deal with cost, production efficiencies, and profits and sometimes view their animals as instruments for human use, he said. The public sometimes interprets these factors to be cold or uncaring, he added.
The public also tends to view animals as companions rather than utilities, Lenz said. Their vision of animal welfare is similar to how they view their own welfare, he said, and they want to protect animals, but they're not always sure what that means or entails.
Animal-rights activists, Lenz said, are driven by a genuine desire to make sure animals are treated well, but many are not familiar with the industries and animal care practices.
And many public officials want to be re-elected and face the challenge of dealing with stakeholder influence when considering bills aimed at regulating animals and their care, he said. But these individuals also aren't always familiar with the animals and how they're cared for.
Finally, Lenz said, he's learned that the public view animal welfare as a moral and ethical issue rather than a scientific one.
In a Perfect World
"In a perfect world we'd base animal welfare decisions on science, health, biologic function, and normal behavior," Lenz said.
But because of the current wide-sweeping views on welfare as an ethical issue, this is difficult to achieve. So, Lenz said, it's important to look for common ground when trying to find solutions for equine welfare issues.
"Decisions regarding welfare must be made to balance science and ethics," he said.
The Unwanted Horse in the US - international implications, 14 Aug 2012 [cached]
Dr Tom Lenz, Unwanted Horse Coalition
Veterinarian Tom Lenz, a past president of the American Association of Equine Practitioners and current chairman of the Unwanted Horse Coalition, provides a perspective on the issue of unwanted horses.
Dr Tom Lenz, DVM, MS, DACT:
Active in the equine industry for over 35 years, Dr Lenz is a Past President of the American Association of Equine Practitioners (AAEP) and currently serves on the AAEP's President's Advisory Board, the Public Policy Committee and the Foundation Advisory Committee.
A long time advocate for the health and welfare of the horse, he has chaired the AAEP's welfare committee, served on the American Veterinary Medical Association's Welfare Committee and currently serves on the welfare committees of the American Horse Council and the Professional Rodeo Cowboy's Association.
He is a trustee of the American Horse Council and serves as Chair of their Unwanted Horse Coalition.
In addition, he is an Honorary Vice President of the American Quarter Horse Association where he is Chair of its Research Committee and writes a monthly horse health column for the Quarter Horse Journal.
Unwanted Horse Coalition Elects Chair, Names Coordinator -, 5 Oct 2006 [cached]
During the week of Oct. 2, the Unwanted Horse Coalition elected Dr. Tom Lenz to serve as chairman and named Katy Carter as the coalition's coordinator.
A past president of the American Association of Equine Practitioners, Lenz is known for his work in the veterinary and horse community.During his 30-year veterinary career, Lenz has worked in private practice, academia, and corporate business.Active in the equine industry, Lenz is a member of the American Horse Council's Animal Welfare Committee and serves on the research committee of the American Quarter Horse Association.He has been involved in the Unwanted Horse Coalition since its inception.
"It is a privilege to continue to serve this group and the horse industry in fulfilling our responsibilities to address this issue," Lenz said.
"The coalition has already begun collecting materials that might be considered helpful in reducing the number of horses that slip into the 'unwanted' category each year," Lenz said.
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