Do bees feel pain when killed?

Whether bees feel pain when killed is debated among scientists, as bees have nervous system that detects damage and responds to harmful stimuli, a process called nociception, but whether they experience pain as subjective emotional suffering like mammals is unclear and research ongoing. Bees have simple nervous system with about one million neurons and can sense injury and react to avoid it, such as pulling away when touched, and studies show bees exhibit nociceptive responses and can learn to avoid stimuli associated with harm, and they produce chemicals like alarm pheromones when injured that signal danger to colony. Some researchers argue bees can experience something akin to pain due to behavioral changes like reduced foraging after injury, while others argue they experience nociception but not emotional pain because they lack brain structures associated with emotional pain processing in mammals like cortex. When killed quickly by crushing, death is instantaneous and any pain would be brief. From ethical perspective, many people choose humane relocation of bees rather than killing because bees are beneficial pollinators essential for agriculture and ecosystem, and killing them harms environment, so relocation by beekeeper is preferred over killing, especially for honeybees. If you must kill bee for safety, doing so quickly reduces potential suffering. So bees likely feel nociception, detection of harmful stimuli, but whether they experience emotional suffering like humans is debated, with evidence suggesting simple nervous system without complex pain emotion.