What is the meaning in a dream of rattle

I had a dream I was with My sister we were riding a train and were having fun then the train went on a track over the cliff and the ride got bumpier and bumpier until we had come across a broken rail the train tried stopping and slid above other trains till it finally stopped although the caboose fell off the edge. then suddenly we were home and there were snakes everywhere and my arm was broken and when I turned around there was a black tongued rattlesnake in front of me. I panicked and tried to get away from it but it bit my index finger and slithered away afterwards I ran to the hall and ran into another black tongued rattlesnake, I then jumped over it and heard my sister scream, she ended up getting bit on the ankleas she followed me. We ended up cutting the heads of the snakes but they were still alive as it bit me again on the neck

I opened my front door and there was a brown snake, that I feared was a rattle snake but it wasn't making any rattle noises. It was stretched out along a black welcome matt.

I was in the beach with my husband but his color was black (real life he is caucasian) there was some panic and we run on a pathway in the dark where a rattle snake color black and yellow appear , my husband took the snake by the head and throw it away to clear the path.