As humans, we live in our thoughts: from pondering what to make for dinner to daydreaming about our last beach vacation. Now, researchers at HHMI's Janelia Research Campus have found that animals also possess an imagination.
On a mostly unrelated science note:
Whatever compression happens to that thumbnail, on my phone at least, does some wild things to the rats face. Interesting how the different fur size/texture/focus interferes with the the compression.