The Playful Dog
"I’ve suffered from sleep paralysis since I was 14 years old. If you’re not familiar, it’s a sensation of not being able to move (usually in bed) and being consciously aware of it. During one of my many episodes, I heard what sounded like someone entering my room, then felt them hugging me until my back began to hurt. I tried to get loose, but whatever was there got angry and growled at me. When I could finally move again, I had goosebumps all over my body and my back was in a lot of pain. I still have sleep paralysis, but I’ve never had a similar experience. I’ll never understand what it was that had a hold of me."
My Thoughts : Now,that probably wasn't your dog,it could've been a monster in disguise or a ghost or that was just a dream
Source of the story : https://www.google.com/amp/s/www.buzzfeed.com/amphtml/bibibarud/good-luck-getting-to-bed