Four of my five have no problems with ceiling fans, and Lion didn't have problems with the ceiling fan in our former residence. The ceiling fans in the bedroom and the den, however, bother him when they are off. When they are on he is fine, but when they are off, he will be walking through the area, look up, see the fan, then get frightened and skulk low to the ground trying to get away as soon as he can, and will keep glancing back at it nervously until he is under something. According to a friend of mine who is an animal communicator, the fans -which are the same colour as the ceiling - throw shadows on the ceiling and their arms look like outstretched wings of birds of prey. It is an instinctual fear of predators in the sky. I have to keep reminding him it is only a machine to make the wind blow inside.