And suddenly another beast, a second, like a bear. It was raised up on one side, and had three ribs in its mouth between its teeth. And they said thus to it: Arise, devour much flesh! (Dan. Dan. 7:5). This beast appears to correspond to the chest and arms of silver in Nebuchadnezzars dream (Dan. Dan. 2:32, Dan. 2:39). Taken as a while, the prophecy of the second beast accurately portrays the characteristics and history of the Medo-Persian Empire which, although beginning in Daniels day, continued for over 200 years until the time of Alexander the Great, 336 B.C.1 The kingdom represented by the bear beast follows upon the overthrow of the lion beast: Medo-Persia overthrew Babylon [#9-#10]. The bear beast is the fourth of seven kingdoms which oppressed Gods people through history. Dominion is taken from this beast, but its life is prolonged for a season and a time (Dan. Dan. 7:12). This is reflected in the contribution of its attributes to the final Beast who is the eighth head [#9-#16] (Rev. Rev. 13:2+). See Symbols of Kingdoms.
1 John F. Walvoord, Daniel: The Key to Prophetic Revelation (Chicago, IL: Moody Bible Institute, 1971), Dan. 7:5.