Hi Jeni!
I don't know why Mia LOVES rocks! She has sooooo many toys, but she'd rather go outside and play with rocks. Of course our driveway is crushed stone, so she has LOTS of rocks to play with. She'll dig up a rock, bring it to me and she waits there till I throw it. If I ignore her, she'll either bark at the rock or she'll look at the rock, then look at me, look at the rock, look at me, etc. She's so funny. Sometimes she comes to me with huge rocks. But she does not chew on them (I made sure of that), she just likes to find them and bring them to me. I never let her bring the rocks inside the house, so you should see all the rocks in the garage right in front of the door going in the house. It's like a collection.
