A good old fashioned boa! I've got a king, a corn and a boa. The king is very active and always out and about, but a bit of a savage when it comes to handling. The cornsnake is very cute and likes to hide and stick his head out to watch us, he enjoys coming out for handling but does like to find somewhere to hide. The boa is our newest and is fairly active (right now she's climbing up her ropes) and LOVES to create havoc when she's out - she should be a dwarf, but I don't care what size she gets to.