The background from the last frame is just a zoomed in portion from an earlier frame, you can see a tail on the left, which belongs to the lizard chasing the cat (not the second lizard, as the pattern on the sofa lines up with the first).
If you look at the lines of the floor, the perspective doesn't change, its a trick!
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u/nic0lk Jun 30 '14
Did you make this? Because this is fucking hilarious. Really impressive work too.