Iain Macarthur used "geometrical patterns and natural elements" to create animal faces and bodies in his series "Wildlife." I find the owl absolutely mesmerizing, though the bear comes at a very close second.
Take a look at them all at Iain's Behance page: http://www.behance.net/gallery/Animal-illustrations-and-shirt-designs/1078011 | Wildlife as exhibited in Phone Booth Gallery [embedded YouTube clip]