While the monkeys reportedly survived the test, it’s unknown if they experienced any short- or long-term health effects from the highly concentrated exposure to the fumes — typical symptoms of carbon monoxide poisoning in people include dizziness, vision problems, irregular heartbeat, seizures or death. With much smaller lungs, it’s likely that the monkeys were similarly impacted.
“The Lovelace Institute does respiratory research on hundreds of primates and other animals such as dogs and rats,” Leary added. “They have had quite a number of USDA violations in the past.”
USDA inspection reports of the facility reviewed by The Dodo show that it has been written up for 13 incidents involving animals since March of 2015 — including the death of a dog who was receiving a procedure by a lab employee who had not been trained.