Wolves work as a pack to bring down bison 10 times their size. Their success lies in launching a mass attack. The wolves work together to harass the bison over days and weeks just to get them to break ranks. Only then can they pick out the weak from the strong, and get their prey. Working alone a wolf runs a very high risk of being badly injured by such a huge opponent.
Japanese bees make mass attack on hornets.
In Japan, ferocious giant hornets can devastate hives of European honey bees killing thousands in a few hours. But if they pick on the wrong hive they can meet their match. Japanese bees ball together around a hornet and their frenzied buzzing heats the hornet to the critical deadly temperature of 45 C. Bees can tolerate temperatures up to 48 C, a tiny but crucial advantage of three degrees that allows them to overcome their killer. Humpback whales hunt with military precision. First they dive deep beneath shoals of herrings and hang in a circle, as perfectly as any synchronised swimming team.