This video is extremely funny but it’s a guilty pleasure because as an animal lover I realise the dog is unfortunately having a nightmare and something’s clearly gone wrong with the mechanism that is supposed to stop us all from acting out our nightmares by paralysing us during dreaming. It certainly proves animals (at least dogs) do have dreams and nightmares like we do and that presumably a common nightmare is one where we are being chased by something very nasty and dangerous.