Help with polar bears pllllease?

Question

How do they stake out their territories and is there a leader or heiarchy ?? Also, how do giraffes stake out their territories and what role does the female/male play in giraffes. THANKS!!

Answer 1

Polar bears tend to live a lone.

Answer 2

For Polar bear -

http://en.wikipedia.org/wiki/Polar_bear

For Giraffes -

http://en.wikipedia.org/wiki/Giraffe