@Victoria'smom are you allowed to have pets? Could you have a cat? They aren't as alert as dogs but mine does react if there is something to worry about and sleeps when there isn't. If there's a noise she perks her ears up and looks around to be sure she's safe. It might be something? I'm so sorry you lost your dog. When it's happened here we have talked about how there is a presence missing in the house because you are so used to that pet being a central part of the house. And that's triply so when you rely on the pet to feel safe.