The dog looks on lazily on to the camera while his cat friend knows that the owner is probably going to upset their perfect arrangement by petting the two of them. "Oh is it time already for you to 'pet' me? Get it over with human!" Says the grumpy cat. Meanwhile the dog couldn't wait for it to get over with. They want to cuddle together because it drives away the nightmares.
Yes, cats and dogs do get nightmares. But when they're able to sleep together, it serves as the perfect way to get it all over with. We wouldn't be surprised to find out that they have watched each other's backs on more than one occasion, shooing away hostile predators who don't really have good intentions. Eagles are known to swoop down from above to grab unwary cats and dogs to their nestlings.