My Oscar shakes a lot. When she shakes, is she just getting up from a nap or was she resting for any amount of time? When Oscar wakes up he shakes so bad that you'd think that it was 40 below in my house. I asked the vet and he said that sometimes when a ferret sleeps or rests for long periods of time their body temperature will go down. When they wake up the body temperature has to rise, so shivering. We humans do it when we're cold and that's the body's natural way of trying to raise body temperature. If you are really concerned though take her to a vet and have a check up done. Isabelle Doiron [Posted in FML issue 2590]