It is therefore surprising to find a sign saying 'Electrified Fence', especially on the outskirts of Chennai - at the Livestock Research Centre in Kattupakkam. Upon asking around, one is told that the fence is basically meant to prevent animals from entering the area; the voltage is just enough to jolt the animals a little bit, there is no permanent damage. Over a period of time, the local animals have learnt to respect the fence and so the power is switched off for the most part; it is used only very rarely, when there are some obvious security threats across the city or when there is a high-profile visitor to the Centre.
I remember that one of the software companies, being an early mover on the OMR had built a similar fence years ago, for the same reasons - keeping out animals!