OS X Dock never have 3D features released with OS X Leopard. Unfortunately, Apple is throwing the 3D Dock in OS X releases Yosemite for transforming into a 2D display. If you miss the dock, you can still find it in OS X Park with the help of a simple application called cDock.
cDock have the ability to change the theme Dock by applying one of the dozens of built-in themes has. There are a variety of themes to choose from, among other night, fulscreen, pink and of course 3D. To be able to apply the 3D Dock in OS X Park, please follow the following guidelines:
1. Download and install cDock
2. In the Dock theme dropdown box, select Yose Light (3D) theme
3. Click Apply
