Imitation in the bedroom

Karen was in the bedroom earlier tonight putting clothes away when she hollered for me because she heard what she thought was me saying her name a few times. I was downstairs on the computer and nowhere near or in the bedroom. I came back downstairs and no sooner then I was back on the computer she heard someone or something walking in the attic above our room. During this happening I came to find later from my oldest daughter that our dog was in the livingroom with her and then he went towards the playroom a little, looked towards the stairs and came back to her with his ears down and whining at her. I don't know if that meant anything, but it happened and I found it significant to mention in this.