Help - As my boys were leaving for school this morning, they came across a garter snake just sitting in the middle of the walkway. We live in Philadelphia and it is currently 36 degrees outside. The snake didn't move as they approached it. We did determine it is still alive though. Being the animal lovers they are, they wanted to try to help it. They didn't want to see it freeze to death. Aside from relocating it into the flower garden and covering it loosely with leaves, is there anything else we could do to help it survive?