The comparison here implied between the actions of one of the higher animals and of one so low in the scale as an earth-worm, may appear far-fetched; for we thus attribute to the worm attention and some mental power, nevertheless I can see no reason to doubt the justice of the comparison. Charles Darwin
Indecency, vulgarity, obscenity these are strictly confined to man he invented them. Among the higher animals there is no trace of them. They hide nothing. They are not ashamed. Mark Twain