Republic Day | Meet 'MULE' Robotic Dog 'Sanjay', Star Of RD Parade In Kolkata | Defence News Indian Army's robotic dogs 'MULE' (Multi Utility Legged Equipment) stole the show at the Republic Day parade in Kolkata on Sunday. Named 'Sanjay', the 'MULE' is an all-weather ground robot dog that can climb stairs, steep hills, and cross hurdles. According to the Indian Army, it is designed for several operations, including perimeter security, asset protection, and chemical-biological-nuclear warfare scenarios. They can also be used for explosives detection and disposal, intelligence, and surveillance.