For the seventh labor, Eurystheus sent Hercules to capture the Cretan Bull. This poor bull has a sad history. Poseidon sent a beautiful white bull to Minos, the King of Crete, to sacrifice but Minos kept him instead. Poseidon threw a fit and caused the king’s wife to fall in love with the bull (which produced the Minotaur as offspring) and sent the formerly docile white bull on a murderous rampage through Crete.
The King of Crete had to build a maze to stash the Minotaur in, feeding it prisoners to keep it alive. Meanwhile, he gave Hercules his permission to capture the white bull and dispose of it.
Hercules snuck up behind the bull and captured it with his bare hands, returning with it to Eurystheus, who once again hid in his large jar like a frightened little boy. Eurystheus wanted to sacrifice the bull to Hera but since she despised Hercules, she refused the offering.
Hercules released the (still rampaging) bull to wander off, which eventually made its way to Marathon. Later, Theseus would capture it and sacrifice the bull to Athena…but that’s another story.