Heated Shelters for Non-hibernating Tortoises
For medium to large Tortoises:
Aivituvin Outdoor Dog House with Insulated Liner Waterproof Dog Kennel for Winter Cat House for Small & Medium & Large Dogs,Cats,Unique All-Around Iron Frame
For tiny tortoises:
Petsfit Outdoor Cat House Weatherproof, Outside Shelter for Feral Cats, Rabbits, Chicken, Small Animal Houses & Habitats, Idea for Guinea Pigs Pigeons Ducks Tortoises
Insulate this smaller house using piece of floor mat cut to size:
We Sell Mats 3/8 Inch Thick Multipurpose Exercise Floor Mat with EVA Foam, Interlocking Tiles, Anti-Fatigue for Home or Gym, 24 in x 24
Cut these door flaps to the size of the door:
Dog Door Replacement Flaps, Safe Plastic Vinyl Strip for DIY Doghouse or Cat Door, Eco-Friendly Transparent Dog House Door Flap, Easy to Cut & Install, 7.9 in x 4.9 ft
Heating:
We recommend heating shelters with radiant heat panels as these are safer and less likely to cause burns:
Vivarium Electronics Radiant Heat Panels
You will need a thermostat to run a radiant heat panel:
JumpStart Jump Start MTPRTC UL Listed Digital Controller Germination Heat Mat Thermostat, 1 Pack
If more heat is needed:
K&H Pet Products Heated Extreme Weather Outdoor Kitty Pad, Waterproof Cat Heated Bed, Pet Warmer for Outside and Feral Cats, Indoor and Outdoor Warming Cat Mat, Tan Petite 9 X 12 Inches 25W
K&H Pet Products Heated Extreme Weather Cat Pad Outdoor, Waterproof Cat Heated Bed, Pet Warmer for Outside and Feral Cats, Indoor and Outdoor Warming Cat House Mat, Black Small 12.5x18.5in 40W