As they set off from District 13, Katniss and her team encounter a number of mortal obstacles as they walk through the city including Weta Digital’s evil lizard mutts. These part-human, part-reptilian creatures appear in one of the most impactful sequences in the film in which Weta Digital was the sole vendor. Using on set reference, these creatures were created by painstakingly replacing the stunt actors in the shots with entirely digital mutts who display impressive jawlines and sets of teeth.