Clip Art Of Littlest Pet Shop How To Use Animated Clip Art In Powerpoint?

How to use animated clip art in Powerpoint? - clip art of littlest pet shop

I am preparing a school project on the Law of cruelty to animals and want to be cute animated images into PowerPoint, a little more interesting.
My problem is that I do not know how to add animated images. I use the 2007 Microsoft Office PowerPoint Home.
Please give a detailed answer on how to add animated images.