Information from the collars can also help reduce tiger-human conflict and improve law enforcement. Apr 23rd, 2021 Neil Carter, University of Michigan The GPS collar on this tiger in Nepal’s Parsa National Park will help scientists understand how the tiger behaves near and away from roads. Neil Carter, CC BY-ND More than 100,000 tigers ranged across Asia a century ago, from the Indian subcontinent to the Russian Far East. Today they are endangered, with only about 4,000 tigers left in the wild. The greatest threats they face are habitat loss and degradation, illegal hunting and declines in their prey. Thanks to focused conservation efforts, tiger numbers have rebounded in some parts of their range. In Nepal, for example, the wild tiger population has nearly doubled from 121 in 2009 to 235 in 2018. But a road-building boom in Asia could undo this progress.