A tired dog is sleeping on a couch --- see what happens! :)

You know the expression "deep sleep"? Here, the dog Apollo shows us all something that for many, whether concerning people or animals, remains very hard to believe could happen! 

The dog's weariness, in fact, is such that it rolls off the couch and lands with a loud thud on the floor, but nevertheless, the dog does not seem to be conscious of what has happened!

Only, the dog's owner is aware of what has really occurred, so while laughing he checks to see if his dog is okay or if he should be worried!