[3] A pale green arboreal species that may reach 1 m (3.3 ft) in length, it is an important cause of snakebite throughout the entire Amazon region.

[4] The nominate subspecies, B. b. bilineata, has vertical dark stripes on the supralabial scales and a dorsal pattern of reddish brown spots with black flecks.

[4] This species is found in the Amazon region of South America: Colombia, Venezuela, Guyana, Suriname, French Guiana, Brazil, Ecuador, Peru, and Bolivia.

[4] Nocturnal, this species spends the day hidden in thick foliage, tree hollows, or at the base of palm fronds, always remaining in places where it can anchor itself with its prehensile tail.

The diet consists of small mammals, such as mouse opossums (Marmosa), mice, birds, lizards, and frogs.

Due to its arboreal nature, most bites are to the upper body, including hands, arms, and faces.

[5] Clinical features of bite wounds include bruising, profound coagulopathy, and spontaneous bleeding.