There are different stories on this; he either strangled it, or shot it with a specially created arrow.
Hydra
Hercules killed the Hydra in Greek mythology by cutting off its heads, and then cauterizing the neck stumps to prevent them from growing back.
During the 12 Labours of Hercules, he killed The Nemean Lion, The Lernean Hydra and The Stymphalian Birds
He was sent to kill the seven headed monster, the hydra.
Hercules engaged in battle with the Hydra at the Lernaean Swamp.
in the Hercules film, he stops and sears at the hydra after he cuts off some heads and i saw the hydra had 27 heads and also had 29 heads when Hercules is falling into the hydra
The Hydra but it is interesting to note that it was the Hydra that did Hercules in at the end.
In the end it was the Hydra that killed Hercules
In Greek mythology, the Hydra was a serpent-like creature slain by the hero Hercules as one of his Twelve Labors. After its defeat, the Hydra was placed in the sky as a constellation to honor the mythological tale of Hercules' triumph over the beast.
Hercules killed the hydra, not odysseus
The nine headed creature was a hydra
no she didnt but she did unkowningly kill him by puting hydra blood in a so called love p.