Change is an invitation into the unknown. I found the following metaphors from Changing Minds creative and insightful in describing various responses to it. From your experience, can you add any more?
The ostrich famously puts its head in the sand when faced with danger. Like a small child, they work on the principle that if they cannot see the predator then the predator cannot see them. This does not seem to be a very good survival strategy. Fortunately, the ostrich also has long legs and can run away very fast.
Moles are dark and difficult to see. They burrow underground and are hard to find. Then they pop up when you think everything has been completed and the change is complete. They make a horrible mess of things and are very destructive.
Tigers fight tooth and claw all the way. They are powerful — or at least that is what they want you to believe. Hurt them only a little and they will seek to hurt you a whole lot more. Their message is this: mess with me at your peril. Go make your change elsewhere little person.
Dogs know that, although they are not bad fighters by themselves, they are far more powerful in a pack. They seek one another out and attack en masse. They are not fearless but know that together they create even more fear. They will fight dirty and nip at you until you are down and then rip you apart.
Owls are wise and knowledgeable people. They sit up on their branches in their tree, pontificating and pointing down at the trivial world below. The know better than you and are not slow to point this out, as well as pointing out all the little faults in your change project (which is, of course, somewhat below them).
Well, you knoow, those old snails, they just go soo slooww. They creep along at, well, a snail's pace and hope that you will leave them to their own devices. Ho hum. See you then.