---
title: "Black-footed pygmy rice rat"
description: "Oligoryzomys nigripes — Mammiferi. Oligoryzomys nigripes, also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus Oligoryzomys of family Cricetidae."
canonical: https://animalchecklist.com/it/animal/black-footed-pygmy-rice-rat
last_updated: 2026-09-20
---

# Black-footed pygmy rice rat

> Oligoryzomys nigripes — Mammiferi. Oligoryzomys nigripes, also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus Oligoryzomys of family Cricetidae.

- Scientific name: *Oligoryzomys nigripes*
- Category: `mammals` (Mammiferi)
- Habitats: `forest` (Foresta)
- iNaturalist observations: 93
- Wikidata: [Q1766677](https://www.wikidata.org/wiki/Q1766677)
- iNaturalist taxon: [44822](https://www.inaturalist.org/taxa/44822)

## Names

- en: Black-footed pygmy rice rat
- de: Schwarzfuß-Zwergreisratte
- es: Colilargo isleño

## Countries with the most observations

BR (35), UY (4)

## Summary

Oligoryzomys nigripes, also known as the black-footed colilargo or the black-footed pygmy rice rat, is a rodent in the genus Oligoryzomys of family Cricetidae. Oligoryzomys nigripes is a species that has been further divided into different sister taxa throughout history. It is found in different countries in South America.  It is a large species with long ears, dark yellow to dark brown upperparts, sharply delimited from the whitish underparts, and often a pink girdle on the chest. This species of rat spends much of its life among the trees. The karyotype is 2n = 62, FNa = 78–82.

Text: Wikipedia (en), CC BY-SA 4.0 — https://en.wikipedia.org/wiki/Oligoryzomys_nigripes

## Photo

![Black-footed pygmy rice rat](https://animalchecklist.com/img/animals/black-footed-pygmy-rice-rat/medium.jpg)

Photo: Francisco Liguori · CC0 · inaturalist — https://www.inaturalist.org/observations/69198950

## Machine access

`GET https://animalchecklist.com/api/v1/animals/black-footed-pygmy-rice-rat?lang=it` — see [openapi.json](https://animalchecklist.com/openapi.json).