This riddle is doing the rounds on the web - thought of asking it on SW

If your stuck in an arena with 50 hawks , 10 crocodiles , 3 browns bears , 15 wolves, 7 buffaloes, 5 gorillas , 10000 rats , one hunter with a rifle and 4 lions and goal is to survive 1 hour by picking 2 of the above to defend you , who do you pick and why?