Aimed at sterilisation, castration, rabies control, rehoming and affordable treatments, this nonprofit sanctuary, at the western end of Tiruvannamalai's ashram area, provides shelter to over 200 homeless and/or injured dogs, plus a few cats. Travellers may be able to help with bathing, feeding, applying creams or simply playing with the animals – it's best to show up after 10.30am. Prepare to be deeply moved.

Possible opportunities for longer-term volunteers.