Quote:
Originally Posted by tdvance
From what I'd read, the "fearless" mouse's genes suppress the development of cells in the nose. If so, it sounds like the mouse isn't detecting that the furry object is a cat, not that its fear was suppressed.
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The sense of smell is closely tied to emotional responses. The mouse certainly sees the cat (though they don't have the best vision), but they probably don't have the same reaction because the emotional response isn't there.