The Karusha Kingdom is one of the Yadava kingdoms of the Mahabharata epic. It is placed to the south of Chedi. Karusha king Dantavakra supported Chedi king Shishupala and was killed by Vasudeva Krishna. Karusha Kingdom is identified as modern Datia district of Madhya Pradesh.
Karusha was mentioned as a kingdom of ancient India (Bharata Varsha) along with the Kuntalas, the Kasi-kosalas, the Chedis, the Bhojas. (6,9)
Karusha was also a type of tree (3,111). Karusha region was probably the regions where these trees grew in abundance
Kiratas (hunter-gatherers) armed with cruel weapons and ever engaged in cruel deeds, eating of fruits and roots and attired in skins and living on the northern slopes of the Himavat and on the eastern mountains and in the region of Karusha on the sea-coast (possibly in the sea coast of Bangladesh) and on both sides of the Lohitya mountains (Lohit, Arunachal Pradesh. They brought tribute to Pandava king Yudhishthira.(2,51)
The assembled kings of the Chedi and the Karusha tribes joined the Pandavas with all their resources. (5,22). Karusha army was placed under the general Dhristaketu who was the king of Chedi Kingdom (5,199). The Chedis, Karushas and Kasis were placed under him.
Other armies allied with the Pandavas who fought along with the Karushas were the Matsyas, Panchalas, Srinjayas, Somakas, Prabhadrakas, some Surasenas, Suras, some Kekayas, Pandyas, Kanchis, Keralas, Cholas, Dravidas, Andharas, some Kosalas, some Magadhas and the Yadavas under Satyaki and Chekitana. (6-47,54,98,107) (7-9,11,21,153), (8-12,30,47,49,54,56,73,78