Knowledge and imagination

“Imagination is more important than knowledge. For knowledge is limited to all we now know and understand, while imagination embraces the entire world, and all there ever will be to know and understand.” - Albert Einstein

Do animals have imagination?

What is imagination?
Is imagination a human thing?
Does your pet have imagination?

You can find out some elements to answer these questions in the following article:
http://www.bbc.com/future/story/20130207-can-animals-imagine