My 11 year old daughter bought a bunny last night. He is about 6-8 weeks old. He's very nice and let's us hold him. He likes to be held and petted. He hops around. But he hasn't pooped at all! I am getting really worried. We have hay, pellets and water for him, but we haven't seen him eat or drink anything since we got him. We're not with him 24/7 so he could be eating and drinking when we're not there. But he's not pooping. Is he just getting used to us? Or is he sick?