I am not sure but maybe you are afraid that they will die that way. A lot of times your fears will come out in your dreams. I remember when my mom was alive I used to have dreams about her dying (she did of cancer). This was way before she ever got sick. I was so afraid of her dying it would play out in my dreams. Maybe try some affrimations before bed like saying "my animals are fine and healthy and we fed." See if that works?

At least that is my take on it. Someone else chime in..........