It can be a phase or the baby could grow up to have pica
Mine does the same thing. If we gave him a big rock, he’d still try to bite it 😆 not that we would!!! His favorite is when I’m wiping his high chair table and he grabs onto my arm like a koala hugs a tree…He’s so strong too and I have to peel him off of it lol
My first never put a single thing in his mouth that wasn't food. This guy tried to eat EVERYTHING. Like he tried to eat one of those white poisonous caterpillars a few weeks ago because I didn't see it in the grass 🤦🏼♀️ talk about a nightmare lol they eventually will grow out of it as they learn what's okay and not