Oracle is humanoid. She is an omnivore.

Delphi under towering Parnassus, where Apollo's oracle was, plays an important part in mythology. Castalia was its sacred spring; Cephissus its river. It was held to be the center of the world, so many pilgrims came to it, from foreign countries as well as Greece. No other shrine rivaled it. The answers to the questions asked by the anxious seekers for Truth were delivered by a priestess who went into a trance before she spoke.
Mythology, by Edith Hamilton