The degu winter baseline
Degus are active, social Chilean rodents that live at ordinary room temperature and feel winter mainly through drafts, damp, and disrupted routine. Your degu does not need a heated cage in a normally heated home. It needs the cage in the lived-in part of the house, holding roughly the mid-sixties to mid-seventies Fahrenheit without cold air spilling over it from a window or hallway door, and without the bake-and-cool cycle of a spot beside a radiator.
Watch behaviour as your thermometer check. Degus that are comfortable stay busy: digging, running on a solid wheel, chewing, and greeting cage mates. A group that spends the day huddled tightly in one corner, shivering, or unusually quiet in a cold snap is telling you the cage position, not just the season, needs fixing. Move the cage first, add bedding second, and only then consider whether the room itself is genuinely too cold.
Bedding depth, hay, and burrowing warmth
Warmth for a degu is mostly insulation it builds itself. Provide a deep layer of suitable substrate it can dig into, generous grass hay it can both eat and drag into a sleeping nest, and at least one enclosed hide per degu so no animal is pushed out of the warm spot by a companion. Cardboard tubes and boxes add cheap insulation and chewing value through winter, but replace them promptly when soiled or damp.
Check the nest area daily in cold weather. A damp nest loses all its warming value and chills the animals sleeping in it, so spot-clean wet patches, top up dry bedding before weekends away from routine, and keep a spare supply stored indoors so replacement bedding is not ice-cold from a garage or shed when it goes in.
Food, teeth, and the low-sugar rule in winter
Winter is when well-meant extras creep in, and degus pay for them. This species is prone to blood-sugar problems, so keep the diet strict: constant grass hay, the usual degu-appropriate pellets, and no sugary treats, fruit-heavy extras, or rich mixes offered as cold-weather comfort. The comfort a degu needs is hay, shelter, and company, not calories.
Teeth grow continuously, so chewing must stay easy all winter. Keep suitable chew wood available and watch that each degu is actually eating hay, not just moving it. Dropping weight, leaving pellets, dribbling, or favouring one side of the mouth points toward dental trouble and deserves a prompt veterinary visit rather than a softer diet improvised at home. Fresh water needs a daily check too, since a stuck bottle valve in a cold room can leave a busy group quietly short of water.
Company, light, and winter activity
Degus are group animals, and winter wellbeing is social as much as thermal. Keep bonded companions together, handle introductions with extra care in winter when cage time is longer, and give the group enough space and multiple hides so togetherness stays a choice. Shorter daylight can shift activity, but degus should still be lively in their active periods; persistent lethargy in one animal while cage mates are busy is a health flag, not a personality change.
Keep handling regular so health checks do not lapse: a brief feel for body condition under the fur, a look at teeth and feet, and a note of who is eating well. Catching a thin degu in a group cage early is far easier when someone is formally on that check each week.
Sharing the winter rota
A degu cage needs several small jobs done reliably: nest checks, hay top-ups, water checks, and appetite watching. Split them explicitly instead of assuming the usual feeder has noticed everything. KinsLe Care Teams lets you assign those care duties for each pet to family members or helpers and see completed tasks marked with a timestamp, which keeps a quiet appetite dip from going unnoticed for days.