Bear? Or heart attack?

Date: 5/9/2018

In the dream we, im not sure who the ppl i was with were, were in a house i didnt recognize. Outside were some square holes filled with water. I asked...what is in these? we found a few that were open further out and they were pretty full of badly mutilated corpses. One of the guys yells out as we were talking, "DO YOU SEE THAT!?" We, there were 3 of us including the yelling guy, looked back to see a bear. Sidenote- my animal fears are bears and sharks. We start running around the house. Why not inside? Hell if i know. The house was built strangely. like short random walls, pillars standing in the middle of nowhere. There were a bunch. We do some parkour over these things and see more bears. it turned into every man for himself. I just ran and ran until as i turned a corner me and one of the guys run into each other. A bear runs up right behind us. I knew i was dead anyway so out of desperation I played dead before the real end. A few seconds later a guy with a camera pops out and i see....it is all animatronics and ppl in costumes.