Which of these is an endangered subspecies of the grey wolf?

The Indian wolf is a subspecies of the grey wolf that inhabits Southwest Asia and the Indian Subcontinent. It is intermediate in size between the Himalayan and the Arabian wolf but lacks the former's luxuriant winter coat due to it living in warmer conditions.

The Indian wolf is similar in structure to the Eurasian wolf, but is smaller, more slightly built, and has shorter fur with little to no underfur. Like the Arabian wolf, it has short, thin fur in summer, though the hair on the back remains long even in summer, an adaptation thought to be against solar radiation.

With less than 3,000 alive, the Indian wolf is the most endangered one amongst all species of wolves. It has been declared as an endangered species in Schedule I of Indian wildlife according to the Wild Life (Protection) Act, 1972.