Do hamsters hybernate? If so, when brought out of the
cold how long to regain activeness?
I do not believe that hamsters hibernate, since they are native to very warm
desert areas, but you might check on that. I don't think they should be left
out in a a very cold place.
Don't forget, hamsters are nocturnal, and don't do much during the day.
A few years ago, we found a stray hamster in our backyard on a cold November
day. It cheered right up when we brought it into our house, warmed and fed
it. So if your hamster really is inactive at night as well as during the
day, it's probably sick.
Richard E. Barrans Jr., Ph.D.
PG Research Foundation, Darien, Illinois
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Update: June 2012