Hinduism
In Hindu mythology, the goddess Saraswati takes the form of a red deer called Rohit according to the Aitareya Upanishad. Saraswati is the goddess of learning so learned men use deer skin as clothing and mats to sit upon. A golden deer plays an important role in the epic Ramayana. While in exile in the forest, Rama's wife Sita sees a golden deer and asks Rama and Lakshmana to get it for her. The deer is actually a rakshasa called Maricha in disguise. Maricha takes this form to lure Rama and Lakshmana away from Sita so his nephew Ravana can kidnap her.
Read more about this topic: Deer In Mythology