I found a baby rat behind my house this morning, and he was soaking wet and shivering. I brought him in the house and put him in a little box with some old pillowcases and a homemade heating pad so he could dry off and get warm. He has been inside his box and with me for a good few hours and he is dry now. His eyes are open and he can hop around, so I don't think he's injured. However, he's refusing to eat. I've never owned a rat before, so I don't have any food meant for a baby rat, and I don't have access to any kinds of milk intended for baby animals. I have tried to give him normal milk and water through a dropper, but he refuses to take it. Sometimes he opens his mouth, but he won't suckle from my finger or the dropper. I have also tried giving him peanut butter, cheese, and bread crust soaked in milk, but he won't touch any of it. Any advice or ideas? All are welcome.