When Herakles presented the dead animal to Eurystheus, the king was disgusted. He ordered Herakles to leave such things outside the gates of Tiryns in the future. Eurystheus then put a large bronze jar underground. This was the place where he would hide whenever Herakles returned to the city with some trophy of his Labors. Zeus put the lion among the stars as the constellation Leo.
In the future, Eurystheus would only communicate with Herakles through Kopreus, his dungman. Herakles skinned the lion with one of its own claws. He wore the skin as a kind of armor and the lion's skull as a helmet. Euripides wrote in his play "Herakles":"First he cleared the grove of Zeus of a lion, and put its skin upon his back, hiding his yellow hair in its fearful tawny gaping jaws."
The origin of the Nemean Lion is not certain. Some say he was the son of either Typhon or the Chimera and the dog Orthros. Some say the moon goddess Selene gave birth to the lion and let it fall to Earth near a two-mouthed cave at Nemea. She set it against the people because they had failed to properly observe her worship. Some say that Hera had Selene create the lion from sea foam and that Iris, the goddess of the rainbow, carried it to Nemea. Others say the lion was the son of the snake goddess Echidna and her son, the dog Orthos. This would make the lion a brother to the Sphinx of Thebes. Hera was said to have brought the lion from the eastern land of the Arimoi and to have released it near Nemea.
The Hydra ("water-snake") was a monster with many heads. She lived beneath a plane tree near the spring called Amymone. This spring was near the seaside city of Lerna. She was the offspring of Typhon and Echidna, and the sister of Kerebos. Hera raised the Hydra to torment Herakles. The Hydra had a dog-like body. Its breath was poisonous. The head in the middle of the monster was immortalit could not die. Eurystheus ordered Herakles to kill this monster. Herakles and his nephew Iolaos (the son of his brother Iphicles) drove to the swamp near Lerna in Herakles' war chariot. Iolaos was Heracles' charioteer and his lover.
Athena told Herakles to force the monster from the swamp with fire arrows. He did, but the monster twisted itself about his feet. He beat the heads with his club, but crushing one head only caused others to erupt. A great crab crawled from the swamp to help the Hydra. It bit Herakles in the foot. He crushed its shell. Herakles called Iolaos for his help and cut the Hydra's heads off with his sword. Iolaos sealed the neck stumps with torches so other heads could not grow in their place.
The Hydra was at last killed. Herakles cut off the immortal head and buried it under a heavy stone in the road. He dipped his arrowheads in the Hydra's poisonous blood. They became deadly. Back in Tiryns, Eurystheus would not count this adventure as a Labor because Herakles had had his nephew's help. He added another Labor to the list. Hera set the crab in the sky as a constellation. The river Anigrus in Elis stank because the Hydra's poison was washed from the arrows Heracles used to kill the centaur Nessus in its waters.
The Stymphalian Birds were man-eating birds living on the shores of Lake Stymphalos in north-eastern Arcadia. The birds were sacred to Ares, the god of war. Their feces poisoned the land and crops would not grow. The birds attacked men with their bronze beaks and claws. They could rain down their sharp bronze feathers to kill men and their animals.
Herakles failed to drive them off with his arrows. Athena gave him a set of metal castanets (or a rattle) made by the blacksmith of the gods, Hephaestus. Herakles climbed to a rocky place over the lake and made so much noise with the castanets that the birds flew as far as the Isle of Ares in the Black Sea. Herakles was able to kill many of them with his arrows as they flew away.
Some say the birds were women. Artemis Stymphalia ruled the swamps about the lake. Her temple there had pictures of young girls with the feet of birds. These girls lured men to their deaths in the swamps. They were said to be the daughters of Stymphalos and Ornis. These two were killed by Herakles when they would not give him food, drink, and a place to rest.
The Cretan Bull rose from the sea. Poseidon, god of the sea, intended King Minos to sacrifice the bull, but it was so handsome that Minos kept it for himself. He sent it to mate with his cows, then sacrificed another bull to Poseidon. The god was angry and caused Minos' wife, Queen Pasiphaë, to develop a sexual desire for the animal.
She mated with it and gave birth to a son. This son was the Minotaur, a monster with the head of a bull and the body of a man. The Cretan Bull went mad. Heracules captured it by throwing a rope about its head and about a leg. Some say he wrestled it, or stunned it with his club.
Minos let Heracules take the bull to Greece. Eurystheus wanted to give the bull to Hera but she would not take it because Heracules had captured it. She let it go and it wandered about Greece. Theseus of Athens finally captured it and sacrificed it to Athena, or some say, Apollo. The bull had spent its days in Crete destroying crops and belching fire.
When Artemis, the goddess of the hunt, was a child, she saw five hinds (female deer) grazing near the Anaurus River in Thessaly. Each was as large as a bull, each had hooves of bronze, and all had antlers of gold. She caught four of them, and used them to pull her chariot. The fifth escaped the goddess and lived on the Keryneian Hill in Arkadia. Hera planned to use this hind against Herakles someday.
Eurystheus ordered Herakles to catch this hind and bring it alive to Tiryns. The danger in this Labor lay in pursuing the hind through wild lands from which no hunter ever returned. Herakles hunted the hind for a year, chasing it through Istria and the Land of the Hyperboreans. The hind took refuge on Mount Artemision. Herakles let fly an arrow that pinned the hind's forelegs (front legs) together without drawing blood. He put the hind on his shoulders and took her back to Tiryns.
Artemis and Apollo stopped Herakles on his way to Tiryns. On some vases, Apollo is seen trying to forcibly take the hind from Herakles. Herakles however lay the blame for the theft on Eurystheus. Artemis accepted this plea and allowed him to pass. Some say Herakles used a net to capture the hind or captured her when she was asleep under a tree.
Eurystheus' daughter Admete was a priestess of Hera. She wanted the Golden Girdle (belt) of Hippolyte, the Queen of the Amazons. This girdle had been a gift to Hippolyte from her father, Ares, the god of war. The Amazons were all related to Ares. They hated men and mated only to make more female warriors. Baby boys were killed or crippled. The lives of these women were devoted to war.
Herakles and friends sailed to their land of Pontos on the Black Sea. The Amazons lived at the mouth of the Thermodon River. Hippolyte welcomed Herakles. She fell in love with his muscles and his great fame. She promised him the girdle as a love token. Hera disguised herself as an Amazon. She whispered among others that Herakles was going to kidnap the Queen. The Amazons charged Herakles' ship on horseback. Herakles killed Hippolyte, and took the girdle. Many Amazons were killed.
Some say Hippolyte would not part with the girdle. Herakles threw her from her horse and threatened her with his club. She would not ask for mercy. Herakles killed her. Some say Hippolyte's sister Melanippe was taken prisoner. She was ransomed with the girdle. Some say Hippolyte herself was taken prisoner and ransomed with the girdle. Others say Theseus took Hippolyte prisoner and gave the girdle to Herakles. Herakles gave the girdle to Eurystheus, who gave it to Admete.