Adequate anesthesia and post-operative pain management in laboratory animals are both ethical obligations and scientific necessities that remain inconsistently applied worldwide.
The welfare harm of inadequate anesthesia in laboratory animal research is profound and immediate. Animals experiencing surgical pain are not passive experimental subjects — they suffer in ways that are neurologically and behaviorally equivalent to pain in humans. Beyond the ethical violation, unmanaged perioperative pain compromises experimental validity by altering physiology, behavior, and immune function. Improved anesthesia and analgesia protocols serve both animal welfare and scientific quality simultaneously. The gap between what good perioperative care looks like and what is routinely practiced across global research represents one of the most actionable improvements available in laboratory animal welfare.