Hydra is the growth of a second head within the egg. Though not harmful to the croc it self both heads have their own separate personality with normally one taking the dominate lead of the body.
When design the second head can different eye color from the other head, but markings sound be same expect for the markings that are asymmetrical and min black and white.
This mutation can be rolled during an inbreeding and is not passable to it offspring. It also causes a+1 to Attack and -1 to speed skill points.
Skill points:
ATK: +1 DEF: 0 SPD: -1 INT: 0