Alligator (Resident Evil 2 Remake)

An alligator that has mutated and grown to immense proportions due to the effects of the T-Virus.

This lives underneath Raccoon City and you encounter it whilst playing as Leon as you traverse the sewers in search of the entrance to the NEST facility.

The sequence in which you encounter it involves you having to avoid its bites. This will culminate in you ducking underneath a gas pipe, which you need to shoot to put the alligator down for good.