My son used to call Dalmatians - at the age of thirty-three still does call them, in fact - Raisin Dogs. It was only recently that I asked him why: he had believed that they were made of flour, with raisins stuck in them.
A childhood belief about cats and dogs

others believed things like this
- I used to believe all dogs were male and all cats were female. I still call dogs "boy" and cats "girl." — Kelly F.
- I used to think that raisins were dead flies. I only recently started to eat them again.— Toinette'
- I used to call croutons "concretes" because they were so crunchy, I thought they were made of concrete.— Scary Dream
- i thought raisins were made out of jelly in a factory like gummy bears, i though this until i was 16!!!— jen
- I recently very disturbed to learn that Al Jolson was in fact Caucasian.Anon
- I used to believe that an oncologist was an "on-call-ogist"Anon