A childhood belief about general

When I was a little kid, I asked my mother about the balls of leaves up in the trees.
She told me that they were squirrels nests.

From then on, i believed that squirrels laid eggs.

I refused to believe that squirrels gave birth to live young in their nests. I would then defiantly argue and tell the person that squirrels built nests so that they could lay their eggs in them.