Clipart Of Littlest Pet Shop Characters What Do You Call Such Clip Art Pictures? Can We Make These Ourselves?

What do you call such clip art pictures? Can we make these ourselves? - clipart of littlest pet shop characters

I saw some clip-art elements in them. These images have a constant background and a few effects that she moved like pictures done. For example, in a landscape picture you can see, moving birds, clouds, with a backdrop of mountains. What's Clip Art, and we can do ourselves, I mean, is there a program available to them?