A: Put the rock back where you found it.
B: But I like the rock, mommy.
A: So do the animals that live here.
B: The animals have many rocks. I just want one.
A: But animals need the rocks, and you don't.
B: What do they need them for?
A: Some animals make their homes with rocks.
B: Very small animals?
A: Yes. You might be taking someone's ceiling!
B: I don't want to ruin their homes.
A: Good. Please put it back.
B: I'll go leave it where I found it.