This is a real polar bear skull sustainably sourced from the Inuit peoples of the Canadian arctic! It is available exclusively in Canada and measures roughly 14" long.
While some people take personal offense to the Inuit's traditional lifestyle, their limited (and sustenance) hunting of animals is not what puts these species at risk. For thousands of years these incredibly hardy and ingenious people have managed to exist in the most inhospitable climate on Earth, while building a truly rich culture.
If you would like to protect the northern ecosystems, do not fault the Inuit for using their local resources to survive... do your part to reduce your personal carbon footprint! The warming of our world, undeniably accelerated by our vast civilizations, is the real source of harm.