As I was cleaning my ferret's teeth I noticed what looked like a cavity in two out of my four ferrets. They were cage mates prior to my adopting them from a shelter. Is this something that should be treated by a vet? They have no problem eating their hard food but I certainly don't want them to have teeth problems. I was told that they are one-year-olds which I would think is pretty young for teeth issues already. Any advice would be appreciated. Thank you! Robin Hegge [Posted in FML issue 4670]