But during the colder months of the year the Bear changes its diet, and becomes carnivorous. Sometimes it contents itself with the various wild animals which it can secure, but sometimes it descends to the lower plains, and seizes upon the goats and sheep in their pastures. This habit is referred to by David, in his well-known speech to Saul, when the king was trying to dissuade him from matching himself against the gigantic Philistine. "And Saul said to David, Thou art not able to go against this Philistine to fight with him: for thou art but a youth, and he a man of war from his youth.... Thy servant kept his father's sheep, and there came a lion and a bear, and took a lamb out of the flock: and I went out after him, and smote him, and delivered it out of his hand; and when he arose against me, I caught him by the beard, and smote him, and slew him. Thy servant slew both the lion and the bear: and this uncircumcised Philistine shall be as one of them, seeing he hath defied the armies of the living God."--1 Sam. xvii. 33-36. [Illustration: ON THE WATCH.] Though not generally apt to attack mankind, it will do so if first attacked, and then becomes a most dangerous enemy. See, for example, that most graphic passage in the book of the prophet Amos, whose business as a herdsman must have made him conversant with the habits, not only of the flocks and herds which he kept, but of the wild beasts which might devour them:--"Woe unto you that desire the day of the Lord! to what end is it for you? the day of the Lord is darkness, and not light. As if a man did flee from a lion, and a bear met him; or went into a house, and leaned his hand on the wall, and a serpent bit him." (v. 19.) Another reference to the dangerous character of the Bear is made in 2 Kings ii. 23, 24, in which is recorded that two she-bears came out of the wood near Bethel, and killed forty-two of the children that mocked at Elisha. As the Bear is not swift of foot, but rather clumsy in its movements, it cannot hope to take the nimbler animals in open chase. It prefers to lie in wait for them in the bushes, and to strike them down with a sudden blow of its paw, a terrible weapon, which it can wield as effectively as the lion uses its claws. An allusion to this habit is made in the Lamentations of Jeremiah (iii. 10), "He was unto me as a bear lying in wait, and as a lion in secret places."