Why are army ants so hostile towards each other?



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    The extreme territoriality between different colonies of army ants is simply the way they have adapted to survive and pass on their particular genes to the next generation. All species must find a way to compete for limited resources like space, food and water as they grow and mate. In this case, the ants have evolved to cooperate with others in their colony, sharing their own resources and firmly keeping anyone else out. Interestingly, if a colony loses its queen and therefore its potential to reproduce, it is sometimes allowed to join a new colony in an unusual display of inter-colonial cooperation.

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