00887-A: Extended Surveillance of Chest Radiographs and Bloodwork in Dogs Deployed to the World Trade Center and the Pentagon

Grant Status: Closed

Grant Amount: $12,960
Cynthia M. Otto, DVM, PhD; University of Pennsylvania
February 1, 2007 - January 31, 2008

Sponsor(s): Tibetan Terrier Club of America/Tibetan Terrier Health & Welfare Foundation

Breed(s): -All Dogs
Research Program Area: General Canine Health
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We have been monitoring the health and behavior of 97 search and rescue dogs deployed on 9/11/01 to the World Trade Center and Pentagon disasters and 55 non-deployed control search and rescue dogs. This study has been ongoing since just after the disasters occurred. Currently, a veterinary epidemiologist is analyzing the first 5 years of bloodwork data, and a board certified radiologist is reviewing the first 5 years of chest radiographs to determine if any changes have occurred or any trends exist. To date, 32 deployed dogs and 15 control dogs enrolled in the study have died. The proportion of deceased deployed dogs is not significantly different than the control group. The rate of cancer in deceased deployed dogs is not different than the rate of cancer in deceased control dogs either. In order to further evaluate the effect of deployment on rate and onset of cancer in these dogs, it is essential to continue to monitor the bloodwork and radiographs of these dogs and the controls throughout their natural lifespan.


Hare, E., Kelsey, K. M., Niedermeyer, G. M., & Otto, C. M. (2020). Long-Term Behavioral Resilience in Search-and-Rescue Dogs Responding to the September 11, 2001 Terrorist Attacks. Applied Animal Behaviour Science, 105173. https://doi.org/10.1016/j.applanim.2020.105173

Otto, C. M., Hare, E., Buchweitz, J. P., Kelsey, K. M., & Fitzgerald, S. D. (2020). Fifteen-year surveillance of pathological findings associated with death or euthanasia in search-and-rescue dogs deployed to the September 11, 2001, terrorist attack sites. Journal of the American Veterinary Medical Association, 257(7), 734–743. https://doi.org/10.2460/javma.257.7.734

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