For copying a PowerPoint slides with animation the steps nvolved are as follows. Goto File and then choose Save As and then choose the File Type as PowerPoint Show and then Save the File by Specifying File name relevant to that content and then Copy the power point slides with animation.
Open a PowerPoint file with a animation presentation. In that you will find a list of slides on the left. You can select the slides you need by clicking the slides by holding the control key and thenm copy those slides by using the shortcut ctrl+c. Then you can paste the copied slides to a new PowerPoint presentation.
It's different for each version of powerpoint. For powerpoint 2007 it is pretty simple. In the slide editor view, right click on the slide, click copy then paste.