The ProblemThe Sumatran Tiger, also known as Panthera Tigris Sumatrae, is endemic to the island of Sumatra, Indonesia. As the smallest surviving subspecies[1] of tiger "distinguished by its heavy black stripes on its orange coat"[1], the Sumatran tiger has become critically endangered with estimates of a population wild of less than 400 individuals. A 1978 expert estimate suggests there were 1,000[2] Sumatran tigers, but since then we have seen an estimated 60% decline in the Sumatran tiger population due to processes that led to the endangerment of Sumatran tigers. Poaching is one of the immediate threats to the Sumatran tiger, with fears that tiger poaching "has not declined significantly since the early 1990s" [2]. With reports concluding that poaching for illegal trade was "responsible for more than 78% of Sumatran tiger deaths" and that this can be estimated at at least "40 per year and possibly more" [3], the Poaching continues to be the greatest threat to the territory of Sumatra. tiger. Additionally, the legal system has allowed poaching to continue with only 4 convictions since 1997 for tiger poaching [4]. Continued poaching of the Sumatran tiger is driven by the demand for illegal trade in tiger parts, both domestically and internationally. Many Sumatran tiger body parts are collected; the most important being claws with 42% of market stalls observed selling [3]. Most parts are sold for use as Asian medicines, such as bones ground to form a powder that is taken with water to treat rheumatism and headaches, while other parts, such as teeth and claws, are used to make jewelry and some are used in magic, rituals and folklore. In addition to killing the tigers themselves, the destruction of their habitat has proven costly to the Sumatrans tiger population. Due to the increase...... middle of paper ......hod.This method is effective because tiger corridors are successful in increasing connectivity between national parks, but evidence also suggests that they are important for breeding with evidence of tracks of tiger cubs in the corridor. Of further importance is the use of the corridor as a home territory, evidence collected from the Tiger Conservation and Protection Unit for the Sumatran Tiger International Wildlife Project [7] shows the importance of reducing tiger habitat fragmentation using tiger corridors. I would say this data is valid and reliable because the program is led by Joe Smith PhD, who has a Masters in Wildlife Biology from Vetinary College and the Institute of Zoology, London. His experience and training ensure that this project will be completed correctly and that the results will be both valid and reliable.