Synopsis
Knowles and McCork ask if goldfish have bad memories and find out what makes them tick.
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Bear Whiteout | Incredible Animal Journeys
This sort of weather's uncomfortable for us humans, but it would have to get much, much worse to bother the bears. They can handle extreme blizzards and temperatures down to about minus 40 with no problems. They'll scoop out a shallow shelter, hunker down and let the bad weather blow itself out.

Caribou resilience | Incredible Animal Journeys
It's -40 degrees, but caribou are built to withstand these extremes. They have compact bodies, insulating hollow fur and they don't need to shiver till it's below -40 degrees. They just sit it out.