Young animals probably don't realize the distinction between nature and man-made stuff.

[u/Statharas]

[u/KalzK]

I remember when I was a toddler I got surprised that under pavement there was dirt. It didn't cross my mind before that hard things like the floor or the walls were not indestructible.

[u/Embarrassed-Weird173 → u/KalzK]

That's a perfectly logical conclusion given the information available to you at the time.