Weird dreams of people/animals dieing?

No worries, Joker. Dreams are notorious for exaggerating, and that's just what this series of dreams is doing. All the dying is a metaphor for change. You are going through some sort of big change in your life right now; one part or stage of your life is coming to an end, and something new is about to begin. Your mind is playing with that whole idea and exaggerating it into death which is the ultimate change. So it's okay! enjoy the drama but don't let it spook you.