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These insects are smarter than it might seem at first glance. The Belgian doctor Jose Halla was able to prove that cockroaches are able to think by placing in front of them houses with different capacities of the total number of cockroaches. And what do you think? If the house accommodated 25 cockroaches, then 50 cockroaches were divided into two equal groups and lived in separate houses, and if they put one house for 50 cockroaches and two small ones, then division did not occur and all 50 cockroaches were identified in a large house. Here is such a collective mind!
