Elephant 'smoking' footage baffles experts

https://www.theguardian.com/science/2018/mar/27/elephant-smoking-footage-baffles-experts-india?CMP=share_btn_tw

Apparently this elephant does not like charcoal too alkali, so can't be for acid stomach upset!

I hear that elephant dung pollution is a serious issue in Thai tourist traps. Maybe someone needs to start biochar supplementary feed program and dung composting with biochar. Every tourist should be required to take a bag home.