I have had at two dogs my entire life. When I was between 4 and 6, I believed that dogs were just people in costumes, and that was why when you gave them a command they understood you. I believed this until my mom bought me a Shi-Tzu (really small dog) when I was 6.
A childhood belief about cats and dogs

others believed things like this
- 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 i was younger i believed that a cat was a girl and dogs were boys.Anon
- I believed that all cats were female and all dogs were male. — Biologically confused
- When I was a little girl, I believed that all cats were girls and all dogs were boys. :)— Mary Ellen