I definitely believe that. I remember watching my daughter when she was a baby, and also growing up
through the years. Many would say that they are just playing and it is just their imagination running wild with them. When my girl was about 1 or so I used to think that she seen things. Used to freak me out a bit and just thinking about and typing this now I still get chills kinda. I would put her down at night or get her in the morning and I would notice that she wasn't always staring right at me...like she was looking over my shoulder. Even a couple years later she would be playing in here room and we would hear her voice. I'd sneak down the hall to hear her better and it was like she was actually carrying on a conversation. As soon as I would enter the room she would just look up at me then back over to the corner where an old dresser sat....then she would just start playing again and if I asked she would just say I was just playing daddy.
My ex's grandfather passed away before we had her and he really liked squirrels. My ex was visiting up at the old homestead and when she returned she came back with a few toys. One of which was this old stuffed toy squirrel. She would not let that thing out of her sight. She had always loved teddy bears and kitties before that. I know that can easily be dismissed, but I found it interesting.
Anyway, there is my little story...