Do you prepare your pets for Winter?

There is not anything I need to do for my tropical fish when the winter comes. Not only my fish tanks have heaters which keep them having water temperature of constant 78~80F, but I also keep the room temperature at constant 73F throughout the entire winter. Unless I lose electricity or gas for days, there is nothing to worry about.

As far as the fish concern, they have the same environment for almost the entire year except for the hottest 2~3 weeks where the temperature can go as high as 90F.