Distribution extension of the Yellow Anaconda Eunectes notaeus Cope, 1862 (Squamata: Boidae) in the state of Rio Grande do Sul, Brazil

The yellow anaconda, Eunectes notaeus, was until recently considered as a species with accidental occurrence on southern Brazil, due to river floods from the Pantanal region on central Brazil. Here we provide monitoring records of a well-established population in the state of Rio Grande do Sul, and also discuss its distribution in the area.