The behavioural cue of ‘flexible self-protection’ is a way to establish whether an animal feels pain, scientists say
Crickets that received the hot probe “overwhelmingly” directed their attention to the affected antenna – they groomed it more frequently, and tended to it over a longer period of time, he says. “They weren’t just agitated and flustered. They were directing their attention to the actual antennae that was hit with this hot probe.”
I’ve seen videos of single cell organisms, and even they look like they feel pain when stabbed or eaten.
On the contrary I’ve seen one where one cell passes straight through another cell, making a hole. The cell that was passed through did not react at all and kept about its business afterwards, even regaining shape. Wild.
Crazy, I think I’ve seen that one too !