I could be wrong but I don't think that Tegus would start to hibernate now because the hibernation season is over end of March ( that what Rick the breeder told me ).What are your temps in the enclosure ? they should be between 90 and 110.Just be carful that your Tegu will not get inside the couch because than you have to take the couch appart.A member here on the forum had to do that one time.I always keep some big blankets on the couch.It's easier for me to keep a eye on my Tegus.
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