Curiosity, for example, did not kill the cat. There are no widely reported cases of felines dying from being too inquisitive. In fact, the original proverb was not “curiosity killed the cat” (which is recorded only from 1921), it was “care killed the cat.” And even that one was changed. When the proverb was first recorded (in Shakespeare, actually, although he seems to be just referring to a well known bit of folk wisdom), care meant sorrow or unhappiness. But by the twentieth century it was care in the sense of too much kindness—something along the lines of a pet that is overfed and pampered.
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Changing definition of -care-
