Zeus had loved her. Hera was jealous. After he raped Callisto and she had a baby boy, she turned her into a bear.
She didn't. Heracles (that is his Greek name) was born to Zeus and a mortal woman. Hera hated him like she hated all of Zeus' illegitimate children.
Hera or Juno.
Callisto was turned into a bear by Hera out of jealousy, as she was yet another love affair of Zeus.
Hera hated Hercules because Zeus, her husband, had Hercules with another woman.
She hated Aphrodite for flirting with Zeus
Hera was his main opponent.
Hera's weakness was that she was a powerful leader but she was married to Zeus.
It was mainly Heracles she hated, but she wasn't nice in general so maybe.
Io (originally a beautiful girl who was turned into a cow).
Aphrodite hated Athena, Artemis and Hera. Athena, Hera and Aphrodite were in a beauty contest of sorts, and Aphrodite won. Thst, of course, is the short version of it.
Hera hated Hercules. She was the wife of Zeus and hated Hercules because he was the son of Zeus; Zeus was never very faithful to Hera. Thus, she attempted to kill him in several ways. When he was small, she sent a pair of snakes to his cradle, intent on killing him and his "brother", the son of the King and Queen Hercules was living with. Hercules grabbed the snakes and banged their heads together, killing them. This was the first indication that Hercules was not a normal child. Later on, Hera sent Hercules into a fit of rage, during which he murdered his wife and sons. Hera hated Hercules. She was the wife of Zeus and hated Hercules because he was the son of Zeus; Zeus was never very faithful to Hera. Thus, she attempted to kill him in several ways. When he was small, she sent a pair of snakes to his cradle, intent on killing him and his "brother", the son of the King and Queen Hercules was living with. Hercules grabbed the snakes and banged their heads together, killing them. This was the first indication that Hercules was not a normal child. Later on, Hera sent Hercules into a fit of rage, during which he murdered his wife and sons. Hera hated Hercules. She was the wife of Zeus and hated Hercules because he was the son of Zeus; Zeus was never very faithful to Hera. Thus, she attempted to kill him in several ways. When he was small, she sent a pair of snakes to his cradle, intent on killing him and his "brother", the son of the King and Queen Hercules was living with. Hercules grabbed the snakes and banged their heads together, killing them. This was the first indication that Hercules was not a normal child. Later on, Hera sent Hercules into a fit of rage, during which he murdered his wife and sons. Hera hated Hercules. She was the wif
Hera was jealous of every other woman that Zeus had an affair with and every child that Zeus had with other women. She particularly hated Hercules.