Care/feeding for a tiger salamander?

While cleaning my sons' room, I discovered that they had smuggled a tiger salamander they had caught in our back yard into the house and hid it in a dresser drawer. LAST WEEK. So, now we have a salamander. They found it on a rainy day, and now it's all hot and nasty and the ground is packed solid, so I don't know whether the poor thing will survive the heat long enough to burrow. Help????