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Some biological features scale with the animal mass (see previous Q&A).

Assuming the same concentration of nociceptors on the skin surface, I'm wondering how painful a 1 cm wound will be perceived in mouse, human or elephant. Despite the same firing number of nociceptors, will the mouse feel more pain as a bigger percentage of the body has been injured? Is it known whether pain sensing follows allometric rules?

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As you cannot really ask a mouse to rank her sense of pain on a scale of 1 to 10, it will not be possible to find a definitive answer for your question. –  skymninge Aug 21 '13 at 6:20
    
@skymninge there are at least 40 [animal models of neuropathic] (ncbi.nlm.nih.gov/pubmed/20030738), but I'm not inside the field and cannot judge if some of them can be used for allometric studies. –  Gianpaolo R Aug 21 '13 at 8:41
    
The question if the mouse will FEEL bigger pain is still debatable. As pain is a feeling, not even by questioning different humans you could measure how much pain is felt. You can measure reactions, but pain is a subjective feeling. If I have an especially bad day, cutting my finger might (feel to) hurt more, than on a day I feel very euphoric. –  skymninge Aug 21 '13 at 10:15
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