He was not as active in the jar as he had been in the baggie. I fed him hotdogs. He ate two of the pieces.
A friend of Charlie's did determine that the snake was nonvenomous through eye shape and split scales after the vent. Otherwise, I would never have kept it. The snake was a water snake. The snake was only kept for two days in the jar until my son returned home from camp so he could see it and then it was released.