King Eurystheus ordered Heracles to slay the dreaded nemean lion as his first task. Heracles traveled to Nemea Valley and scared the massive lion out of his lair. He then strangled the beast and skinned its hide with its own claws. Heracles tied the huge and bulky hide onto his back and wore it to king Eurytheus' kingdom to seek instructions on his next labor.
As heracles' fourth task, he was instructed to get rid of the dangerous brass birds which live near Lake Stymphalus. As soon ans the birds spotted heracles, they mistook him for a colossal mammal that they saw as a filling meal. The flock swooped down as one attempting to penetrate the thick lion hide, fortunately for Heracles, the bird's beaks and claws slipped on the slick hide. Suddenly Heracles gave a deafening roar loud enough to frighten the birds. Terrified, they flew from their home, never to return.
A Fire-Breathing Bull
For Heracles' fifth labor, The king asked him to bring back a sacred stag which belonged to Artemis. Artemis treasured these animals, so Heracles knew this task was not going to be easy. He spent weeks traveling to find this beloved group, and when the did, he spent even more weeks surveying the deer in their habitat. When Heracles found the Cerynean stag and approached it carefully, then the deer grew accustomed to him, they ran together all the way back to the palace.
The Sword-Tusked Boar
Heracles was then sent far away to Thrace to seek a group of man-eating horses and bring them back alive for his next labor. He discovered the four deadly mares and knew that only an evil man would ever want to breed such horses, so he slew Diomedes. He then fed what remained of his body to the horses. Afterwards, the horses were so tame that Heracles was able to ride them back to his cousin.
For Heracles' next task, he was sent south to capture the fire-breathing Cretan Bull alive. Although this was no ordinary bull, Heracles was determined to complete the labor. When Heracles found this bull, he seized it by its immense horns and dragged it many miles until it eventually became tame. Finally, he rode the newly tamed bull back to Mycenae.
For Heracles' third task, he was told to trap the Erymanthian boar which lived on the slopes of Mt. Eurymanthus. This boar was not ordinary, it was said to have tusks that were as sharp as the finest swords. Despite the dangers of this particular task, Heracles knew that he needed to complete it. When he reached the beast's lair, he shouted loudly into the cave and scared it outside where it crashed headfirst into a snowbank. In doing this, the boar trapped its burly tusks in the snow. Heracles then chained up the boar and and took it to the gates of the palace.