My 2-year-old son enjoys having stuffed animals around him as comfort objects, as well as playing with toy humans and animals. Ever since the first time he saw a talking puppet (around 18 months old, probably) he immediately avoids looking at it. This is for any kind of puppet - animal puppets, human puppets, etc.
He doesn't cry or act afraid in any way other than that he refuses to look at it, as if it kind of freaks him out. He does this for puppets in videos as well as at a live puppet show, and has even happened with hand puppets up close. What's at the root of this behavior? Is this common?