East African puff adders (Bitis arietans) are among the most widespread and recognizable venomous snakes in East Africa. Found across savannas, grasslands, forests, farmlands, and semi-arid regions, puff adders are highly adaptable and occur in countries such as Kenya, Tanzania, Uganda, Ethiopia, Rwanda, and South Sudan. Their excellent camouflage and slow-moving nature make them well suited to a variety of habitats, including areas close to human settlements.
The puff adder in East Africa is known for its thick body, triangular head, and distinctive warning behavior. When threatened, it produces a loud hissing “puff” sound, which gives the species its common name. Puff adders rely on ambush hunting, feeding mainly on small mammals, birds, amphibians, and reptiles. As efficient predators, they play an important role in controlling rodent populations and maintaining ecological balance.
Although East African puff adders possess potent venom, they are generally non-aggressive and prefer to remain still rather than flee, which contributes to their reputation as one of the most encountered snakes in Africa. Education, awareness, and habitat conservation are essential to reducing human–snake conflict and supporting biodiversity. With their wide distribution, ecological importance, and remarkable adaptations, puff adders in East Africa remain a key species in the region’s reptile diversity.
