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|Other names||Sipro Kukur (Kumauni - सिप्रो कुकुर)|
|Origin||Kumaon, Uttarakhand, India|
|Breed status||Not recognized as a standardized breed by any major kennel club.|
|Domestic dog (Canis lupus familiaris)|
The Kumaon Mastiff (Kumauni: सिप्रो कुकुर), also known as the Indian Mastiff and Bulli, is a rare Molosser-type working breed of dog originating in Uttarakhand state of India. Originally bred as a watch dog and livestock guardian in the hills of Kumaon, this dog is rare even in the region of its origin.
It is said that the dogs primitive ancestors were domiciled in the Kumaon region.
Kumaon Mastiff is a large dog with fairly lean, muscular, well-boned bodies. They have a large powerful head and a strong neck . They have a short, soft coat that always comes in brindle, ranging from dark to light shades. They may also have white markings. The average height of these dogs is 28 inches.
Their appearance has been described to be similar to old Great Danes.
They are aggressive dogs and need training.These dogs have great guarding ability and they show protective instinct from the strangers and intruders. 
- "Kumaon Mastiff-On the Verge of Extinction". mastiffdogsite.com. Retrieved March 31, 2013.
- "Cypor Kukur". Retrieved March 31, 2013.
- "Kumaon Mastiff Dog Breed Information". petsworld.in. Retrieved July 8, 2015.
- "Endangered Breeds". BSL Information. Retrieved March 31, 2013.