Frank J. Wilstach, comp. A Dictionary of Similes. 1916.
Cautious
Cautious as a fox.
—Anonymous
As cautious as a Scot.
—Anonymous
Cautious as a good housekeeper.
—Honoré de Balzac
Cautious as a cragsman.
—Gilbert K. Chesterton
A vague caution, like that of a wild beast that is fierce but feeble—or like that of an insect whose little fragment of earth has given way, and made it pause in a palsy of distrust.
—George Eliot
Cautious as a girl.
—Arsène Houssaye
As cautious as a burglar walking over a tin roof in cowhide boots.
—Wallace Irwin