Call of the Wild by Jack London
I just completed the Librivox audio edition of Jack London’s Call of the Wild. I loved it; it’s just over the top.
On a side note, this was the first Librivox audiobook that I’ve tried. I certainly like the principle of making free audiobooks of works that are in the public domain, but there were some problems with this recording. Each chapter was read by a different person. This wasn’t a problem, but the quality and volume of the recordings varied widely.