You can look at APHIS inspection reports and see many incidents of animals dying for reasons other than euthanasia. A better source is NIH OLAW reports that you can obtain via FOIA. There’s no shortage of research institute self-reporting of animals dying due to a variety of issues including starvation, dehydration, improper protocol, etc.
Oh, I actually thought most test animals were euthanized after the experiment. Do you happen to have any data or sources on this stuff?
You can look at APHIS inspection reports and see many incidents of animals dying for reasons other than euthanasia. A better source is NIH OLAW reports that you can obtain via FOIA. There’s no shortage of research institute self-reporting of animals dying due to a variety of issues including starvation, dehydration, improper protocol, etc.