Blackish deer mouse
species of mammal

The blackish deer mouse or blackish deermouse (Peromyscus furvus) is a species of rodent in the family Cricetidae. It is a species of the genus Peromyscus, a closely related group of New World mice often called "deermice". It is endemic to Mexico, and is relatively poorly studied.
Description
The blackish deer mouse is a relatively large member of its genus, with a total length of 24 to 28 cm (9.4 to 11.0 in), including the 11-to-14 cm (4.3-to-5.5 in) tail; males are slightly larger than females. As the common name implies, the fur over most of the head and body is a mixture of black and dark brown, giving the animal an overall color that has been described as bistre. However, the feet, and some cases, the tip of the tail, are white, and the underparts are pale grey. There is a ring of pure black fur around the eyes, while the tail has only a sparse covering of hair. The female has six teats, two in the axillary region, and four in the inguinal region.
They are herbivorous, and have been recorded as eating pokeweed fruit and blackberries. They are believed to either breed year-round, or, at least, to have a prolonged breeding season that lasts for much of the year.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Dec 5, 2025. The linked authority identifier is Q1770188. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Blackish deer mouse” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.