english: We discovered that they can go through three-millimeter gaps, the height of two pennies, two stacked pennies, and when they do this, they can actually run through those confined spaces at high speeds, although you never see it.
non_english: Otkrili smo da su u stanju da prođu kroz prostor od tri milimetra, debljine dva novčića i za to vreme zapravo veoma brzo trče kroz taj skučen prostor, iako se to ne vidi.