iimantodes cenchoa, mildly venomous, rear-fanged snake. tortuguero costa rica wildlife

iimantodes cenchoa blunthead tree snake neotropical bluntheaded fiddlestring mildly venomous colubridae costa rica reptile animal themes venom lizard poison toxic tortuguero wildlife wild wilderness creature fauna woodland rain forest exotic tropical poisonous harmful dangerous head big mottled patterned spotty variegated ugly species stripe brown night nocturnal parque nacional rear-fanged snake common names blunt-headed fiddle-string family colubridae