This is the skull of an opossum (Didelphis virginiana). These animals are usually around 9-13 lbs and just under two feet long. They also have a hairless prehensile tail that aids in climbing and carrying objects. They have unique prints as their rear feet have opposable “thumbs”. The phrase “playing possum” comes from these animals, when faced with a threat they will sometimes feign death and even excrete a fluid that has a putrid odor.