Bear Puzzle

A bear walks 1 kilometre south, 1 kilometre west and then 1 kilometre north
He ends up in exactly the same place he started.
What colour is the bear?

[simple_tooltip content=’The bear must be white. The only place where you could walk 1km South, 1km West (or east) and then 1km north … and end up where you started could be the North Pole  so he must be a Polar bear’]Hover your mouse here for the solution[/simple_tooltip]