keel-bellied whip snake dryophiops rubescens found on the forest floor in malaysian rain-forest during the night

animals asia background bellied biology blurred brown close colubridae dryophiops during family fauna floor forest herpetofauna herpetology horizontal keelbellied keeled lowland macro malaysia malaysian nature night normally photography pupils rainforest reptiles rubescens sanke serpent snake specie tongue tropical whip wild wilderness zoology