Matthew Poole and continuators on Jeremiah 51:38

38 They shall roar together like lions: they shall yell as lions whelps .

It is incertain whether this be to be understood of the Medes, making horrible roarings and noises when they took Babylon: Or, of the Babylonians, who upon the taking of their City (as is usual) made horrid outcries as being a people quite undone, some think it referreth to the drunken noises of the Babylonians at their Festival, during the celebration of which we are told their City was taken, but to this one would think the comparison of Lions whelps (which ordinarily yell for want of victuals, or for some mischief done them, not when their bellies are full) should not so well agree.

Marginal references: Or, shake themselves.