it stays hot but gets cold at night
Canada's tundra can get very cold were the ice is will stay until it melts.
Their thick coats help them stay warm!
Until it gets warm.
Tundra doesn't "stay" anywhere. It's a climate, not an animal.
If the bearded dragon gets too cold it will go to sleep
microorganisms
They follow their prey - ruminants like elk, deer, moose, and even bison: At Yellowstone National Park in Wyoming USA, a wolf pack is "specializing" in bison. At night, the wolves curl up together to stay warm.
Wolves are allowed to stay in Yellowstone. There is a recovery center in Yellowstone that is part of the plan to protect the wolves.
As you get higher it gets colder. If you get high enough it gets cold enough for the snow to stay.
Wolves either stay in the pack or they stay calm if the others are calm
Because he gets cold and/or lonely and wants to come back in.