Both my kids 'saw" things. The funny thing is that the first thing both of them "saw" was a black cat. For my oldest who is now 12 I don't remember to much. She did have a slew of imagninary friends and I think it is just the start of that. My youngest 22months has been having fun play time with a black cat. We were in the store last month and the cat was jumping from within one glass cabinet to another and she was chasing it and smiling and having a great time. They have always been non-scary stuff. My oldest would have huge fights with the imaginary friends or the friends would be fighting and she would have to intercede. Those were difficult days. It was better when they were getting along. I think both of them knew that they were not really there although that can be hard to decipher.