bornean keeled pit viper , bako national park

action adder africa aggressive animal arboreal atheris attack bako beautifully bite blooded bornean branch bush camaflouge camaflouged close danger dangerous deadly defense defensive fang fauna feared feisty forest green head herpetology jungle keeled national nature nocturnal park pit poisonous reptile reptilian scale scary serpent snake subannulatus temple this toxic tropical tropidolaemus venom venomous viper wild wildlife