Encyclopedia

Tomodon

Genus of snakes

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Source updated May 17, 2026

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Tomodon is a monotypic genus of snake in the subfamily Dipsadinae of the family Colubridae. The genus contains the sole species Tomodon dorsatus, also known commonly as the pampas snake, which is endemic to South America.

01Description

The eye of Tomodon dorsatus has a round pupil. The lining of the mouth is black. The last maxillary tooth is enlarged and grooved. There are seven upper labials. The smooth dorsal scales are arranged in 17 rows on the neck and at midbody, and reduced to 15 rows anterior to the cloaca.

02Geographic distribution

Tomodon dorsatus is found in northeastern Argentina, central and southeastern Brazil, Paraguay, and Uruguay.

03Habitat

The preferred natural habitat of Tomodon dorsatus is forest.

04Diet

Tomodon dorsatum preys exclusively upon molluscs.

05Reproduction

The mode of reproduction of Tomodon dorsatus has been described as viviparous and as ovoviviparous.

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Sources and credits

This article is adapted from the Wikipedia article “Tomodon”, written by its contributors and licensed under CC BY-SA 4.0. Fathomly has changed the layout, removed citation markers, navigation and maintenance notices, and adjusted punctuation. This adapted version is shared under the same license. For references, see the original article.

Images, from Wikimedia Commons:

Tomodon dorsatus01.jpg by Diogo B. Provete, CC BY-SA 2.5

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