because hera didn't want hercules to succeed Zues' tests
Hera sent the serpents with poison fangs to kill baby Heracles.
When Heracles was but a baby Hera may have sent serpents to kill him; he strangled these.
The first indication of Hercules strength was in his childhood while still in his baby cot managed to kill the two serpents that goddess Hera sent for his destruction.
Baby Hercules killed two snakes that Hera sent to kill him.
Baby Hercules killed two snakes that Hera sent to kill him.
A pair of snakes.
Two snakes sent by jealous Hera.
Hera tried to kill Hercules by placing two serpents in his crib when he was a baby, but he strangled them. Then, when he grew up, he got the 12 tasks from Hera. When Hercules was married to his first wife Hera set a madness upon him and his killed his whole family. In penance for that his brother-in-law sent him on 12 labours. One of those labours was to kill the Hydra and during that battle Hera sent Cancer the crab to worry Hercules while he was seriously involved.
Several figures attempted to kill Hercules throughout his mythological tales. Notably, Hera, who was jealous of Hercules as he was the son of her husband Zeus and a mortal woman, sent serpents to kill him when he was an infant. Later, the hero faced various challenges and enemies, including the giant Antaeus and the centaur Nessus, who sought to harm him. Ultimately, his greatest trials came from the Twelve Labors imposed on him, which were designed to be nearly impossible tasks.
He was sent to kill the seven headed monster, the hydra.
Athena sends two giant sea serpents to strangle and kill him and his two sons. In another version of the story, it was said that Poseidon sent the sea serpents to strangle and kill Laocoön and his two sons.
Are you asking about the snake that tried to kill Hercules when he was an infant? If so, Hera hated him and sent snakes to kill him, but he strangled them in his crib.