Trimeresurus cantori  Trimeresurus cantori, commonly known as the Cantor's pit viper (or Cantor's pitviper), is a species of venomous snake, a pit viper in the family Viperidae. The species is endemic to the Nicobar Islands of India. It was named after Theodore Edward Cantor (1809-1860), a Danish naturalist serving as a surgeon with the East India Company in Calcutta. No subspecies are currently recognized. "Trimeresurus cantori" is found in the Nicobar Islands (which are in the Bay of Bengal), India, and possibly in the Andaman Islands. The type locality given is "Nicobars". Adults of "T. cantori" may attain a snout-vent length (SVL) of . Boulenger reported that an adult female with a total length of had a tail long. This species varies in pattern and color. Dorsally, it may be green, dark brown, or light brown. Green individuals may have yellow spots, and brown specimens may have darker spots. Running along each side of the head, below the eye and above the upper lip, is a cream-colored stripe. There is also a cream-colored stripe on the first row of dorsal scales on each side of the body. Ventrally, it is greenish or cream-colored, with some brown spots on the underside of the tail. The weakly keeled dorsal scales are arranged in 27 to 31 rows at midbody. The ventrals number 174-184. The anal plate is entire, and the subcaudals, which are divided, number 55-76. "Trimeresurus cantori" is nocturnal and will hunt near houses. "Trimeresurus cantori" preys upon small mammals and birds. The species "T. cantori" possesses a potent venom, and some of its bites to humans have resulted in fatalities.