Official Transcript
A baby alligator that was kept as a pet before being let loose in the Raccoon City sewers, where it was infected by the T-Virus. The effects of the virus include highly increased aggression and an increase in size to over 10 meters long. It normally inhabits the garbage dump, where food is most easily available. This creature is a special case, born by accident instead of planning, and there have been no reports of alligator-based creatures in Umbrella before or since.