Horned vipers are venomous snakes that can be found in Africa, the Middle East, and parts of Europe. They can be found in desert and semi-desert areas, as well as in grasslands and rocky areas. Horned vipers are considered to be highly venomous and can cause significant tissue damage and even death if not treated quickly. They are also known to be very aggressive, and will often strike if they feel threatened. It is important to be aware of the potential dangers of horned vipers and to take precautions when in their habitat.