Gajashastra

Gajashastra (Sanskrit: 'Elephant lore') is an Indian manual on elephants dated to 6th-5th century BCE attributed to Palakapya.

Description
It mentions destruction of habitat by elephants in the Anga Mahajanapada during the reign of King Romapeda (Lomapada). It also includes information regarding habitat of elephants in the Indian subcontinent including present day states of Rajasthan, Punjab, Andhra, Gujarat, Madhya Pradesh etc. and details on how to capture and train them.