The Many-horned Adder is a dwarf adder, rarely exceeding 60 cm. As the name suggests they have more than one horn above each eye.

They inhabit the rocky outcrops along the south western coastline. These snakes feed on a variety of small rodents, lizards and potentially birds.

This snake is venomous but not considered to be deadly. The venom is cytotoxic causing severe swelling, blistering and necrosis (loss of tissue). Severe bites may lead to the loss of digits.