KATHMANDU — Kamal Devkota, who campaigns for snake conservation in Nepal, doesn’t always have an easy time convincing people of his cause. On one occasion, he recalled, as part of his door-to-door awareness campaign, he visited a family who had lost a member to a snake bite. “It was a difficult situation for us,” Devkota said. “They asked us why they should save the snakes that killed their family member.” Campaigners such as Devkota, president of Nepal Toxinology Association, face a tough time in Nepal, especially during the monsoon and pre-monsoon seasons, when snakes venture out in search o…