As a kid I remember being exposed to various books, some showing farm animals, including sheep. At one timd I got the idea that sheep were just as big as cows. Later, perhaps from never having seen any sheep that big, I went through a period of doubting the existence of sheep altogether, thinking sheep must be imaginary beasts that I had dreamed up.
A childhood belief about general

others believed things like this
- I use to think sheep shrank when it rained.Anon
- sheep were wooly pigs— CJ
- I used to believe that humans were a subspecies of sheep.Anon
- I used to believe that when sheep had their wool sheered off, they became lambds again.— Janet
- I used to believe that when sheep die, god takes their wool and makes it into clouds— Oded
- As a young child I thought that sheep and poodles were the same animal.— Jane