 Bitis gabonica , most commonly known as the Gaboon viper , is a viper species found in the rainforests and savannas of sub @-@ Saharan Africa . Like all vipers , it is venomous . It is not only the largest member of the genus Bitis , but also the world 's heaviest viperid , and it has the longest fangs – up to 2 inches in length ( 5 cm ) , and it has highest venom yield of any snake . Two subspecies are currently recognized , including the nominate subspecies described here . 
 Bitis <a href='uninflect' title='1'><mark>gabonica</mark></a> , most commonly known as the Gaboon viper , <a href='drop_aux' title='2'><mark>is</mark></a>a viper species found in the rainforests and savannas of sub @-@ Saharan Africa . Like all vipers , it <a href='drop_aux' title='3'><mark>is</mark></a>venomous . It <a href='negative_concord' title='4'><mark>is</mark></a> <a href='negative_concord' title='5'><mark>not</mark></a>only the largest member of the genus Bitis , but also the world <a href='null_genetive' title='6'><mark>'s</mark></a>heaviest viperid , and it <a href='got' title='7'><mark>has</mark></a> the longest fangs – up to 2 inches in length ( 5 cm ) , and it <a href='got' title='8'><mark>has</mark></a> highest venom yield of any snake . Two subspecies are currently recognized , including the nominate subspecies described here . 
Bitis gaboned , most commonly known as the Gaboon viper , a viper species found in da rainforests and savannas of sub @-@ Saharan Africa . Like all vipers , it venomous . It ain't only the largest member of the genus Bitis , but also the world  heaviest viperid , and it got the longest fangs – up to 2 inches in length ( 5 cm ) , and it got highest venom yield of any snake . 2 subspecies r currently recognized , including the nominate subspecies described hea .