We read this during our mythology unit... HIS NEPHEW LOLAUS.
Heracles defeated the Hydra by cutting off its heads and cauterizing the neck stumps to prevent them from regrowing.
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.
The Lernean Hydra is killed by Heracles in his second of twelve labors. However why the Hydra is killed is never fully explained.
The hydra of Lake Lerna (called the Lernean Hydra). Killing her was one of Heracles' labors.
Heracles
For every head cut off, the hydra gows two more. To counteract this, Heracles burned each stump of a head.
Heracles killed the Hydra by using fire to cauterize its neck stumps after he decapitated its heads. Each time he cut off one head, two more would grow back in its place. To prevent this regeneration, his nephew Iolaus assisted him by using a torch to sear the wounds. Ultimately, Heracles was able to defeat the Hydra by destroying its immortal head, which he buried under a heavy rock.
The second labour of Hercules was to defeat Hydra
Lernean Hydra.
Persephone, Antigone, Tisiphone, Thrinacia, Aeaea, Hyperborean, Stygian, Bosphorus, Hellespont, Halistherses, Chimaera, Hydra, Perseus, Heracles...
Hercules/Heracles killed the Nemean Lion and the Hydra.
heracles fought him in a battle so heracles would be one but i also know that the hydra fought with him in battles