Job 39:15

And forgetteth that the foot may crush them,.... The foot of the traveller, they being laid in the ground, where he may walk, or on the sand of the seashore, where he may tread and trample upon them unawares, and crush them to pieces; to prevent which this creature has no foresight;

or that the wild beast may break them; supposing they may be, though not where men walk, yet where wild beasts frequent, they may be as easily broken by the one as the other; against which it guards not, having no instinct in nature, as some creatures have, to direct to the preservation of them.