The horned adder has small horn-like scales above its eyes that help break up its outline in sandy environments. Africa is home to hundreds of snake species, but only a small percentage are ...

Gaboon vipers have the longest fangs of any venomous snake, at 2 inches, and have the highest venom yield of any snake, reports show. A bite from one can easily be deadly, though bites are not common.

The snake — which Wade said was about 5 inches in diameter and about 5 feet long and actually was one of two such snakes in the house — is a Gaboon viper, a native of sub-Saharan Africa. One of the ...