I caught a wild bunny?

There were possums under our deck, so my dad put an animal trap near the hole where they were getting in. We caught the possum yesterday and let it go, but today there was a medium size bunny in the cage!!! My dad is not home, he's at work, and my mom is gone too. We have a cage from our old rabbit we used to have, but i dont know if it would be big enough. Its soooooo0oooo cute, but idk what to do????