Walrus (Odobenus rosmarus)

[Polar]

One of the world's toughest, if not the toughest, predators (or prey depending on how you look at them) in existence, walruses are equipped with one of nature's thickest hides and blubber layer, equipped with dense tusks, a giant muscular body, and skeletons much denser than most giant land herbivores. They are the hardest prey to kill, much like a tank that stabs instead of shoots cannons. Extremely agile for their size too, and with one swift motion can paddle themselves across land almost at the speed of Usain Bolt. 

Humongous male polar bears have extreme trouble even dealing with a younger female walrus, even by ambush, and that is a testament to how tough these creatures are. Walruses, much like bison or cape buffalo, also have numbers on their side as well; they are extremely social creatures especially around the midst of summer and breeding seasons and polar bears normally hunt at maximum during summer. Reply