Poecilotheria metallica. A beautiful spider native to India and Sri Lanka. Commonly known as a "Gooty Sapphire Tarantula" for its colour and the town in which it was first discovered. Grows to 14 - 20cm (6-8") it has a "medically significant bite".
This arachnid resides in south-central India. "The [peacock tarantula's] habitat is under intense pressure from the surrounding villages as well as from insurgents who use forest resources for their existence and operations....This species is categorized as CR [Critically Endangered] because of its range restricted to less than 100 km², single location and continuing decline in habitat quality"- IUCN Red List
Huge (120 mm tip to tip) and likely very fast and poisonous, the Tiger Spider (Poecilotheria rajaei) from Sri Lanka is the perfect arachnophobe's nightmare. Usually lives in trees but is known to creep in houses every now and then.