Where are golden lanceheads, shown in picture, found?

Bothrops insularis, commonly known as the golden lancehead, is a highly venomous pit viper species found exclusively on the Ilha da Queimada Grande (Snake Island) off the coast of São Paulo state, in Brazil. The species is named for the light yellowish-brown color of its underside and for its head shape that is characteristic of the genus Bothrops. No subspecies of Bothrops insularis are currently recognized. It is one of the most venomous snakes in Latin America.

On average, they grow to a length of 70 cm (28 in) and 90 cm (35 in), and is known to reach 118 cm (46 in). The color pattern consists of a pale yellowish-brown ground color, overlaid with a series of dorsal blotches that may be triangular or quadrangular, broad or narrow, and alternating or opposite along the dorsal median

They are both terrestrial or arboreal. They prefer to spend time singly and usually are found in trees hunting for prey or seeking shelter among leaf litter or in rock crevices.

They are carnivores and their diet consists mostly of perching birds. However, they have been reported to eat lizards, and even resort to cannibalism. Newborn and juvenile prey primarily upon invertebrates.

The threat to the species is the destruction of its habitat. Since the island on which the snake is found is so small, it can only support a small population, Also, because the island is the only place where they are found if that population is wiped out, the species will be extinct.