A dog's movie chasing after something in a dream and running desperately while sleeping

A movie of a dog that keeps running desperately while sleeping, as if chased by something scary in a dream. Even after getting up, I'm sleeping, I rush on the wall and crash from my head.
Movie playback is from the following.
YouTube - Sleeping Dog Runs Into Wall

I thought that he was sleeping quietly, suddenly flapped his feet and started running while sleeping.



Ah! woke up.

Are you asleep as you rush into the wall?

Gochin!

Van!

I want to see I woke up hitting my head.


It must have been chased by a scary thing in a dream.
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in Video, Posted by darkhorse_log