Ingo Arndt / Close up of pelvic spur of Malagasy tree boa (Sanzinia madagascariensis) the vestigial remains of the snake's legs. Endemic to Madagascar.
Nick Garbutt / Madagascar Tree Boa (Sanzinia madagascariensis) coiled in forest understorey. Montane rainforest, Marojejy National Park, north east Madagascar.
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Nick Garbutt / Madagascar Tree Boa (Sanzinia madagascariensis) coiled in forest understorey. Montane rainforest, Marojejy National Park, north east Madagascar.
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Nick Garbutt / Madagascar Tree Boa (Sanzinia madagascariensis) in montane rainforest undergrowth, amidst swirling mist and low cloud. Marojejy National Park, north east Madagascar.
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Nick Garbutt / Madagascar Tree Boa (Sanzinia madagascariensis) coiled in forest understorey. Montane rainforest, Marojejy National Park, north east Madagascar.
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David Pattyn / Madagascar ground boa (Acrantophis madagascariensis), well camouflaged against leaves, Anjajavy Private Reserve, north west Madagascar.