When I was 5 years old. Cats have ears that stick up, and on the back they have little loops. I thought that was when they had babies that would be there ears.
A childhood belief about cats and dogs

others believed things like this
- I used to believe that "Earwigs lived in your ears", scared
me to death for years.— Will Chapman - From a misunderstanding, I thought everyone’s ears were the same size.— Enrico
- i used to believe that bunny's could fly with their ears.Anon
- I used to believe that if you smoked too much,when you got mad your ears would smoke.Anon
- I used to believe that earwigs crawl in your ears— Janice
- My sister used to believe if you stuck a Q-Tip in one of her ears her brain would pop out the other ear. — Mr.McMelon