Singh claims in his diary that, at the orphanage, the two girls showed wolf-like behaviour typical for feral children. They would not allow themselves to be dressed, scratched and bit people who tried to feed them, rejected cooked food and walked on all fours. Both girls had developed thick calluses on their palms and knees from having walked on all fours. The girls were mostly nocturnal, had an aversion to sunshine, and could see very well in the dark. They also exhibited an acute sense of smell and an enhanced ability to hear.