Pangolins, insect-eating mammals that live in tropical parts of Africa and Asia, are under threat from a growing inter-continental illegal trade in the animals and their scales, according to a new report. While poaching of large animals such as elephants and rhinos and the illegal trade in ivory and horn receives widespread attention (in 2012 35,000 elephants were slaughtered for their ivory and 810 rhinos for their horns) the trade in smaller and more common species is often overlooked.