Robocroc

A rocket carrying nano robots crash lands shortly after takeoff into a zoo. The bots are released and find their way into a massive crocodile. The croc, now programmed to kill, will target anything and anyone for its next meal.

Robocroc is a 2013 adventure horror movie directed by Arthur Sinclair, starring Corin Nemec, Keith Duffy, Steven Hartley. It holds an IMDb rating of 3.0/10 from 1,214 votes and runs 1h 24m.