The sanctuary is one of the few global locations where the grizzled giant squirrel (Ratufa macroura) can be observed in its natural habitat.
It is now integrated into the Srivilliputhur-Megamalai Tiger Reserve, creating a contiguous wildlife habitat.
The sanctuary's elevation gradient supports distinct vegetation types, moving from tropical thorn forest at the base to evergreen forest at the peaks.
It acts as a crucial watershed, providing water for agricultural plains in the Srivilliputhur and Rajapalayam regions.
The grizzled giant squirrel is known for its greyish-brown fur and white eye-rings, which provide camouflage in the canopy.
The sanctuary is a transition zone that links the southern Western Ghats with the central Western Ghats.
The Srivilliputhur Grizzled Squirrel Wildlife Sanctuary is a protected area in the Western Ghats of Tamil Nadu, specifically established to conserve the near-threatened grizzled giant squirrel. Spanning approximately 485 square kilometers, the sanctuary features a diverse range of habitats, including dry deciduous forests, semi-evergreen forests, and moist tropical forests. The terrain is rugged, with elevations ranging from 100 meters to 2,010 meters above sea level. It serves as a vital corridor for wildlife, including the Indian giant squirrel, elephants, leopards, and nilgiri langurs. The sanctuary is part of the larger Meghamalai-Srivilliputhur Tiger Reserve, which was integrated to improve biodiversity connectivity. Visitors navigate through hilly landscapes that form a portion of the southern Western Ghats biodiversity hotspot. Water sources within the sanctuary, such as the Periyar and Kallar rivers, support the local fauna. The area is also an Important Bird Area, hosting numerous endemic avian species.
Lookout points near the sanctuary entrance providing panoramic views of the Western Ghats range.
Hire a local forest department-approved guide to increase the likelihood of spotting the elusive giant squirrels.
Wear high-quality hiking boots with good grip due to the steep, uneven terrain.
Carry binoculars and a long-lens camera, as squirrels and birds are typically high in the canopy.
Avoid visiting during the peak heat of the afternoon when wildlife activity is minimal; do not stray from marked trails due to terrain risks.
Operations are subject to seasonal closures during the monsoon season or high-fire-risk periods as determined by the Tamil Nadu Forest Department.
Maintain silence to avoid disturbing wildlife, do not litter, and strictly follow the guide's instructions regarding movement and photography.
