Dream About Being Attacked By Huge Monster Animal

This dream was about

My boyfriend was telling me about this video game he had and it sounded rlly strange so I came over to try it and i completely shifted into the video game. I was the character. It started off with being in this western farm kinda, there weren't any trees around just land. I'm currently inside of the house and I hear this bone shivering awful scream but it wasn't another person it came from a huge ass animal, so I look outside. What I saw was horrific and I could tell you what the animal was because it had the body of a bear, the size of a 2 story house, extremely long ear that point right up, and a tail similar to a golden retriever. It's mouth could open so wide and it was so many teeth in rows like a shark's mouth. I saw this beast chasing a dog and the beast would never try to kill the dog, they like the thrill of the chase but I didn't know so I went to go save the dog but I was killed over and over again, I was stomped on, my head ripped off, pulled my limbs apart. I felt like I could feel it though. It felt so real. My last attempt at saving the dog, I almost did it bit the beast had my leg and I actually felt like there was a chunk out of my left thigh was being bite off and dragged around and then I woke up.