Hi all. Personally this is one of the things in life I am most scared of. Sometime of the year you can find them crossing the roads in the late afternoon. I found this text on SAN PARKS website "Puff adders are generalists that tolerate a wide variety of habitats and environmental conditions across Africa. They are sit-and-wait predators that, although slow-moving, can strike very rapidly. Their primary prey is rodents, although they are known to take toads and lizards, particularly in the case of juvenile puff adders. They are, by African standards, relatively common and may occur in reasonable numbers in highly suitable habitat such as low, thick coastal bush. Puff adders are viviparous and are known in exceptional cases to give birth to very large litters and a litter of 156 has been recorded in East Africa; in South Africa litters are usually between 20 and 40. Puff adders have a strong venom with primarily cytotoxic effects that may lead to death if not treated. Puff adders are responsible for a large percentage of the venomous snakebites in Africa. This may be ascribed to their excellent camouflage and relatively slow speed of escape and their very fast strike, which allows people to approach too closely or even step on the snake. If the snake becomes aware of an oncoming human it will normally take evasive action if given time or will hiss very loudly. Only when approached too quickly for the snake to avoid a confrontation, it will strike. Bites from this snake are serious due to the strong venom and the relatively long fangs that allow deep injection of the venom."