Candoia aspera, commonly known as the Viper Boa, is a small, robust snake native to New Guinea and neighboring islands. It thrives in dense forest habitats and is nocturnal and terrestrial. Viper Boas exhibit a unique rough, keeled scale texture, resembling the appearance of a viper. They are ambush predators, primarily feeding on small mammals and birds.

Candoia aspera, commonly known as the Viper Boa, is native to the islands of New Guinea, including both Papua New Guinea and the Indonesian province of Papua. It is also found on some nearby islands in the Bismarck Archipelago.

The Viper Boa typically inhabits lowland rainforests, swampy areas, and regions with dense vegetation. These areas are characterized by high humidity and warm temperatures, typical of tropical rainforest climates. The species may also be found near water bodies such as rivers and streams.

Candoia aspera is primarily a terrestrial and fossorial species, meaning it spends a significant amount of time on the ground and often burrows into leaf litter or loose soil. It is a nocturnal predator, feeding on small mammals, birds, and occasionally reptiles. Its cryptic coloration helps it blend into the forest floor, aiding in both predation and avoiding larger predators.