This is the name given to a big cat seen about 10 years ago around Anamudi, the highest peak south of the Himalayas: Pogeyan cat. Being uniformly greyish, it was not photographed or filmed, but people try and identify it anyway. Based on the propensity of all panthers and leopards to produce strong variations in the color of their coat, it could be a genetic variation of a local leopard. More about this on Tetrapodzoology.
See also: Mutant Leopards.