 Zanjeer ( " Chain " , or " Shackles " ) , a detection dog who detected arms and ammunition used in 1993 Mumbai ( Bombay ) serial explosions . During his service , he helped recover 57 country @-@ made bombs , 175 patrol bombs , 11 military grade armaments , 242 grenades and 600 detonators . His biggest contribution to the police force and the city was the detection of 3 @,@ 329 kg of RDX . He also helped detect 18 Type 56 rifles and five 9mm pistols . 
