While the ability to feel pain is a complex issue with ongoing scientific debate, there is growing evidence that some animals might not experience pain in the same way humans do.
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Fish lack the neural architecture necessary for phenomenal consciousness, suggesting they may not feel pain. [16-Dec-2014]
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Sponges and jellyfish lack brains, and scientists generally agree that they cannot feel pain. [May 4, 2016]
However, it is crucial to remember that the scientific understanding of pain in animals is constantly evolving. More research is needed to understand how different species experience pain, and whether they have the capacity for conscious suffering.
