I used to think that butterflies were fairies that hid from humans, but now I know they're not because fairies don't exist.
I used to believe that all animals hatch from eggs
I used to think that all birds flew until I saw a series in which they explained which are the species of birds that are not flying.
I used to think that lions, like tigers, could not be tamed, until I saw on TV that there were people who kept them as pets.
I used to think giraffes were a type of horse
I used to believe in dragons when i was 12 years old and i thought i can ride it.
I used to think that if you had a pet with an unusual name (mine was a cat called Aspro lol), it meant that you would see a mental vision of what your future baby would be like, with how children and animals always get special love and care.
When I was little I used to believe that dogs could speak and only did it when there were no people around
When I was little I used to believe that dogs talked to each other when barking.
I thought millipedes were just baby centipedes.