About the Authors


Janet M. Scarlett, DVM, MS, PhD

Dr. Scarlett is a Professor Emerita of Epidemiology, founder and former Director of the Maddie’s Shelter Medicine Program at Cornell University. She received her D.V.M. at Michigan State University, and her M.P.H. and Ph.D. in Epidemiology from the University of Minnesota. During her career she focused on problems of companion animals. In the mid 1990’s she became interested in the health and welfare of homeless animals, particularly those in or at risk of being placed in animal shelters. She has worked on shelter-related projects including those involving infectious disease, reasons for relinquishment, effectiveness of spay/neuter programs, and the use of metrics to improve shelter animal welfare. She continues her interest in the use of shelter metrics to improve animal welfare.


Mike Greenberg, DVM

Dr. Greenberg completed his training in shelter medicine with the Maddie's Shelter Medicine Program at Cornell's College of Veterinary Medicine in 2011. Since that time, he has worked  clinically and as a consultant for multiple public and private animal shelters throughout the United States. Currently, he is the medical director for Pet Community Center in Nashville, TN and works with Nashville’s municipal shelter, Metro Animal Care and Control. He has a particular interest in helping shelters and low-cost clinics find inexpensive ways to use data and technology to help improve their efficiency and more effectively target their efforts. When not in Nashville, he works as medical director for Animal Balance, helping to lead large-scale canine and feline sterilization campaigns on island nations throughout the world.


Tiva Hoshizaki, BVSc

Dr. Hoshizaki is a 2012 graduate from Massey University, New Zealand. She completed three years of advanced training in shelter medicine with the Maddie's Shelter Medicine Program at Cornell University in 2016 and has also completed the Maddie’s Graduate Certificate in Shelter Medicine through the University of Florida. Dr. Hoshizaki’s passion lies in the application of technology to improve the welfare of shelter animal. She currently works as a software designer, shelter veterinarian, and consultant in California.