Tension gripped Arignar Anna Zoological Park in Vandalur on Sunday as a two-year-old bison broke free from its enclosure, leading to the immediate evacuation of visitors. The escape occurred due to an open gate intended for the construction of a water tank for bison. Zoo officials swiftly responded to the situation, evacuating onlookers and initiating a search operation to locate the escaped animal. This incident follows the recent escape of two Hanuman langurs from Vandalur Zoo just two weeks ago, highlighting concerns about animal containment in the facility.