less than 6 dtgrees - cold for baby bear, minus health. Could help some campfires. But every 2 degrees under +6 - need 1-2 campfires. And if there will be a cold front outside, where temperature may be -50 and even -80 - your baby-bear will dye, cause i have no idea, how many campfires you must have to heat him.
More than +20 dergees - overheat, minus health. And again i have no idea how to cool a baby-bear. I tried to put him in the ocean, tried to pour water from the bucket, opened windows and doors to create a draft. I even tried to cut the bear with scissors! Nothing worked, and our little bear died from overheating -_-