You might want to check to make sure it's legal to keep him. I don't know about your state, but mine has really strict fish/game laws regarding keeping any wild animals, including toads. (I've been researching a native biotope tank, and found out I can't keep much of anything....) If anyone happened to mention your pet to someone who accidentally said something to a game warden, you'd have to pay fines and possibly have your other pets taken as well...
Most of the time they won't say anything, but I personally know a few game wardens that are just mean like that...