When one observes an ant colony, it probably seems like an efficient and harmonious community devoid of quarrels and conflicts. Nothing could be further from the truth. The world of ants, it turns out, is full of animosities. For example, there is friction between the queen and the workers over the gender of the offspring, or among workers themselves about laying unfertilized eggs. There are also other hostilities, for instance, between a colony's rightful inhabitants and any unwanted guests.
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