Surviving out in the wild is a tricky and dangerous affair - but having a strong gang to back you up makes it all that much easier to get by. On their own, these animals are seemingly small and insignificant but when there are tens, hundreds or even thousands of them, they form one collective brain capable of incredible things. From mighty buffalo herd numbering in the 1000's, to cunning wild-dogs who never hunt alone- to gangs of mongooses who have learn the art of team mobbing. We take a look into the deeper workings of some of natures most successful team units.