My toy

Brick, the Karelian bear-hunting dog. A very rare and fascinating breed from the Karelian region of Finland. www.animalplanet.com/tv-shows/dogs-101/videos/karelian-bear-dog There are only a few hundred in the USA.
This particular dog is way less fierce than the video portrays, but he did chase a bear, once, did not make it home for three days, and has also gone after deer. He will run for many miles and hours until wearing out.