
He's still learning the ropes a little bit. And it was only his second heroic battle, keep in mind. Definitely not the smartest move, but in the heat of battle, he would've died otherwise. Once things got out of hand, he was acting pretty much on impulse - a head lunges at him, he cuts it off. Hercules isn't the brightest bulb, and could be forgiven the first couple times for thinking it could only regenerate its heads a certain number of times.

Either the body grows to accommodate the new heads, or some of the new heads sprout from the necks of previous heads.How are all those necks even attached to the body?


How does the Hydra's body grow that many heads? By the battle's end the Hydra has already gained dozens of heads, and except for the claw it grabs Hercules with its body is never shown onscreen anymore.
