Michelle,
I have to agree with MyBunnyBoys. Not a good idea to moveyour rabbit in and outside in the winter. If peopledo bring them inside, it's advised to keep them in the coldest rooms,like a basement. The sudden change in temperature can subjectthem to getting sick and stressing out.
As stated by SunnieBunny Rabbitry farbetter than Icanexplain it: "Rabbits don't just grow a coat forthe winter, they also put on extra condition and fat. I raise flemishgiants and they gain about five pounds for the winter. It has to bemonitored so that way they dont gain too much or all at once because itcan be too hard on them, and too hard on their heart. My rabbits livein the barn and I noticed them starting to get ready for winter about amonth or two ago. Since then the youngsters have realy filled out andpacked on a firm condition, and my seniors have already gained aboutthree pounds and I imagine them to gain about four more on most ofthem. I think that they start this when the days start to get shorter.The barn is heated to above freezing during the winter but they stillwill still sort of get winterized. I think that you are correct aboutbringing them in and out putting stress on them."
-Carolyn