Name the tiger specialists who provided the first ever photographic evidence of the role of the male tiger in post-natal care and peaceful interaction with its cubs, thus refuting charges against it of infanticide

Valmik Thapar and Fateh Singh Rathore documented groundbreaking observations of male tigers caring for their cubs in Ranthambhore, proving they don't kill their own young. Their photographic evidence in the 1980s changed scientific understanding of tiger behavior. Jim Corbett was a famous hunter-conservationist from an earlier era, while Kailash Sankhala was known as India's 'Tiger Man' for conservation work.