Dream About Dog Killed By Man

I had this nightmare when I was either 7 or 8, it was super weird yet scary. I was in a spacious bedroom (it wasn’t mine but it also didn’t seem like it belonged to anyone.) the bedroom was colorful, it had plushies with bright colors everywhere. There was a vent near the ground big enough for someone to crawl in. Soon I heard banging coming from the vents as if someone was quickly crawling through them. I saw a dog in a big hamster ball with a terrified look on its face. Soon after a man with a knife and black clothing was able to break the vent and get through, throwing the dog all the way to the wall in the process. When the dog hit the wall the hamster ball broke open on impact. The man then approached the dog and killed it with the knife in his hand. Then he started to walk towards me, and before he could do anything I woke up. I forgot to mention that some of my family members were in this room with me, but it almost seemed as if they were frozen. They had little shock and worry in their faces, but never said a thing nor did they move.