I believed that when a cat ate a mouse, the mouse went to live in the cats tail. How else did the the tip of the cats tail move so seemingly independent from the rest of the cat? And that would explain why the cats liked to chase their tale!
A childhood belief about cats and dogs

others believed things like this
- My Dad convinced me that Manx cats had no tail - and only three legs.— Jim
- I alwaysused to think white cats were girls, and black cats were male ...— Smiley Face
- I used to believe that the cats eyes in the road...reflectors...were the eyeballs from real cats.— Liza P.
- My sister and I thought cats and dogs were the same animal, the dogs were male and the cats were female.— Paul
- I used to believe all dogs were male and all cats were female. I still call dogs "boy" and cats "girl." — Kelly F.
- I use to believe that cats and dogs were the same species; cats were girls and dogs were boys.— poopcrystals