We wanted to update you on the findings from the necropsies (animal autopsies) and the insight that provided into the cause of the catastrophic incident that resulted in the death of 34 reptiles in March.
The results indicate the cause of death was most likely due to a toxic agent.
Necropsies showed many animals had swollen blood vessels and changes in the liver and the heart. Veterinarians at the U.T. College of Veterinary Medicine determined the combination of these findings, along with the death of multiple animals, is most consistent with a toxic agent. The blood of affected and unaffected animals was tested for multiple toxins and none were found. Some substances such as carbon monoxide and carbon dioxide, as well as electrical shock, cannot be tested for after death and thus cannot be ruled out. No infectious agents were identified during the analysis.
The event occurred in a single building in our reptile complex. We conducted extensive testing of air quality and the building’s HVAC and temperature monitoring systems. All air quality tests in the building were within normal ranges. A thermostat was found to be malfunctioning intermittently, but the temperature monitoring system, which alerts us if temperatures in the building exceed or fall below acceptable ranges, worked reliably during all tests.
During the repeated systems testing, we were unable to replicate an event consistent with the suspected cause, and the decision has been made to take the building out of use as the safest course of action.
If there is a positive to come from this, it is the affirmation that the conservation work we do is important to you, and it strengthens our commitment and urgency to construct a new, state-of-the-art reptile education center as part of our current capital campaign.
Thank you to each of you who sent us a supportive word or thought. The outpouring of kindness from our community helped make a difficult time more bearable.