Hybridization rarely occurs in nature, However individuals of closely related species do occasionally mate and result is a biological hybrid which shares traits of both parent species.

The Chinnar Wildlife Sanctuary is home to second largest population of Grizzled Giant Squirrel Ratufa macroura after Srivalliputhur in Tamil Nadu. It has been recorded a hybrid individual of Malabar Giant Squirrel Ratufa indica and Grizzled Giant squirrel Ratufa macroura in the Chinnar Wildlife Sanctuary.

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Courtship behaviour and mating of Malabar Giant Squirrel and Grizzled Giant Squirrel at Chinnar Wildlife Sanctuary.

 

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Hybrid individual of Malabar Giant Squirrel and Grizzled Giant Squirrel