I've told this story before and could go into a ton of detail but here's the short version.
I am 100% sure I vividly remember a dog that apparently doesn't exist. When I was 16 we lived on the other side of the province and my uncle had this little jack russell named Crue. Crue went missing for several months and then turned up at a humane society over an hour away and we were all shocked this little dog has made it so far.
anyway that was almost 20 years ago and the other day I was talking to my parents and was like you know "whenever I hear about Jack Russells I think about Crue and that stunt he pulled" and they had no idea what I was talking about. Insisted my uncle had never had such a dog, I must have dreamed it, etc. Honestly anyone else who would have remembered this dog has been dead for a long time and I don't even have any pictures of my uncle. I have absolutely no way to prove this dog existed but I'm sure that he did.