Dream of grandmother, mother, screaming, woke up

I had a dream when I was younger, that I was in my home country, at my grandmother's house (my mother's mother), and my family and I were sitting on the couches, or on the floor- around the coffee table. My mother had my little sister, who is 4 years younger than me (she was a baby in the dream), in her lap, sitting on the couch. I was sitting on the floor in front of them, when my little sister starting laughing. Her laughter annoyed me so much that I started hitting her head with my hand as hard as I could. Her laughter was stuck on replay, literally, as if she were a robot that'd malfunctioned. No one paid any mind to what I or my sister was doing. I was sobbing and hitting her, when two feral dogs rushed into the living room we were in. I jumped to my feet and to the opposite side of the big dining table that was nearby. I was screaming and crying at the huge dogs, who were barking at me. Nobody had noticed the dogs, or me hiding behind the table; they were all continuing to converse with each other as if nothing was happening. The dogs, they made no move to attack me or go around the table, they just stood there and barked at me. Then, my grandmother burst into the room (as she was in another room) and starting smacking and shoo-ing the dogs away. They whimpered and ran out the living room, proceeding to leave the house. I woke up at this point.