Gaboon Viper
These large and highly venomous snakes are 1d3+4 feet long and can weigh up to 25 pounds. Primarily nocturnal, these vipers are found in wooded areas and rainforests, typically at lower elevations. Gaboon vipers are sluggish, and may hiss a warning, but do not often strike if left alone. However, a thief can extract 1d3+2 doses of venom from a Gaboon viper with a successful DC 10 Handle Poison check, which might cause PCs to seek these serpents out. Other names: Butterfly adder, forest puff adder, swampjack, and whisper.
Summary
Init +0; Atk bite +8 melee (venom); AC 12; HD 1d4; MV 10’; Act 1d16; SP infravision 30’, venom (1d3 Stamina plus Fort DC 14 or 1d3 permanent Strength and 1d3 permanent Agility; second Fort DC 14 if the first save fails or die); SV Fort +0; Ref +2; Will +4; AL N.