How to Handle Hairy Situations Ferrets commonly hide any sign of illness or injury until it becomes serious. Because of this you must remain observant of its daily activities such as eating, sleeping, playing, breathing or urinating to understand if it is showing any abnormal signs. Signs of an Emergency Below is a list of some common signs a ferret displays during an illness or an emergency-type situation. If your ferret presents any of these symptoms, take him to a veterinarian immediately.