I think it was a photo op. In reality, when they are ready to hibernate the lady wraps them in tea towells. And none of the animals in the photo were wrapped. I hibernate some of my tortoises in chest-type freezers (unplugged). The tortoises are in boxes and the freezers are stuffed with shredded newspaper. Quite a few folks hibernate in refrigerators, but you can't go by that picture.
Tell me how do they breathe in there? How cold does it get? Are they like bears? Do they know that their hibernating? Dale doesn't hibernate so I know nothing about this. Very interesting to see though. Candy
Everything slows way down, including respiration. You are supposed to open the door every so often to allow an exchange of air. In my case, with the chest-type freezers, I place a pencil across one corner to keep the lid from shutting tightly.