Io
I believe you mean transformed, as a heifer is a cow, and she instead of he. In that case it would be Io, one of Zeus's lovers.
Io.
Io
Io
Io, one of the moons of Jupiter was transformed into a heifer by Zeus' wife Hera who was jealous of his interest in her.
She was turned into a heifer to protect her from Hera.
Zeus turned Io into a heifer.
You are no moon. You are Juno.
The goddess Hera. Io was a girl that Hera transformed into a cow, Argus was the servant of Hera whose eyes were set in a peacock's tail, and Hera trained the Nemean lion.
Hera turned her husband's lover into a cow guarded by a 100- eyed monster
where can you usually find hera
Argus is a Dali painting in the surrealist style (also a series of Dali sketches now published) depicting a Surrealist interpretation of the Greek legend of Argos Panoptes. Argus/Argos was a hundred-eyed giant, sent by the goddess Hera to watch over a sacred heifer. The cow was actually the nymph Io, whom Hera's husband Zeus had seduced and then transformed to escape Hera's detection. The full myth can be found at Wikipedia. Each of Argos's eyes were eventually put out, and he was killed by Hermes at Zeus's instruction.