Another resident of the Raccoon City Zoo, the crocodile dubbed "Gnaw" did not grow to the gargantuan proportions witnessed with the Alligator also seen in Raccoon City or Sheena Island, indicating a difference between the two species' response to the T-virus. Gnaw, remains however, a much larger version of its former self. The crocodiles hunt in their vast watery enclosure, and wait in ambush for prey to come nearby. They are extremely agile and capable of jumping high out of the water. Typically, they are also very efficient swimmers.
Just like the Alligator, the Gnaw was produced through accidental exposure to the T-virus, joining the ranks of it's fellow undead zoomates.