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Documenting Threatened Species (DoTS) é um projeto ambicioso que busca documentar e divulgar para o mundo as espécies ameaçadas de extinção no Brasil.
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Veja mais sobre o Projeto DoTS e sobre as espécies ameaçadas de extinção no Brasil em www.projetodots.org ou na conta de Instagram do projeto (https://www.instagram.com/projeto_dots).

Family Natricidae or Colubridae, depending on your taxonomy

This animal also revealed itself on snake day- we had seen almost no snakes for a couple of weeks, then saw a total of about half a dozen on the same day.

Based on the snout color and head pattern I'm pretty sure this is the right id based on characters in Fraga et al.

The common name for this snake, Broadhead Ground Snake, doesn't seem to match up very well with its morphology. To me it has a very coral snake shape, which is to say especially tube-like.

https://www.flickr.com/photos/stoufferlsu/43823035122/in/photostream/
https://www.flickr.com/photos/stoufferlsu/43823035982/in/photostream/
https://www.flickr.com/photos/stoufferlsu/43823038622/in/photostream/
https://www.flickr.com/photos/stoufferlsu/28935254927/in/photostream/

An adult specimen found in a shallow pond after a heavy, night-time rain where numerous others were observed together with a large Ceratophrys cranwelli which opportunistically preyed on these smaller microhylids.