Caterpillar?

Zoe's daily conversation has gone on a different level... From his cute remarks, now to discovery and test of his own knowledge...

Like right now, kids are outside exploring...then I heard them (seems like they saw a different kinda worm)... Then came the debate...

Zoe: it's not a caterpillar... Coz he doesn't dig and doesn't find his way out.

Then the older siblings reasoned out...but he insisted ...

Zoe: caterpillar has to dig his way out...