I used to believe that dogs' tongues were made from ham, so if the dog was hot, i'd sit there trying to bite it for hours, timing my rhythm. I stopped believing this when I managed to catch it arround 7 years old. It didn't taste like ham, which I way very disappointed about.
A childhood belief about cats and dogs

others believed things like this
- when i was younger i thought ants had tongues. i always pictured them sticking their tongues out at me. — i was an idiot
- i thought hot dogs were made from real dogs and sum tasted good sum didnt.— Wayne
- Thanks to the movie "Annie", I thought hot dogs were made from real dogs. — Katie
- I used to believe "mixed breeds" of dogs were made by two dogs being put in a blender— Andie
- When my daughter was small she developed tonsillitis but she told everyone she had "tongues and lighters"— Jeannie Bee
- I used to think that a movie is made in realtime. I tought that a 2 hour movie is made in 2 hours.— Alexander