Omilteme cottontail
Sylvilagus insonus (Nelson, 1904)
The omilteme cottontail (Sylvilagus insonus) is a species in the family Leporidae, order Lagomorpha. Recorded adults weigh about 3 kg. Its IUCN Red List status is Data Deficient.
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Quick facts about the omilteme cottontail
- Weight
- 3 kgsrc for Weight
- Length
- Not recorded
- Lifespan
- Not recorded
- Diet
- Herbivoresrc for Diet
- Main food
- Not recorded
- Habitat
- Not recorded
- Young per litter or clutch
- Not recorded
- Active
- At night (nocturnal)src for Active
- Lifestyle
- Terrestrialsrc for Lifestyle
- Conservation status
- Data Deficient (IUCN)src for Conservation status
- Countries on record
- Not recorded
Where does the omilteme cottontail live?
Not recorded
What is the omilteme cottontail?
The Omilteme cottontail (Sylvilagus insonus), or Omiltemi cottontail (Spanish: conejo de Omiltemi), is a species of cottontail rabbit in the family Leporidae found only in the Mexican state of Guerrero in the Sierra Madre del Sur mountain range. It is a nocturnal, large rabbit, rufous to black in fur color, with long ears and a short tail. This cottontail is restricted to cloud forests at elevations of up to 11,499 feet (3,505 meters).
First identified in 1904 by Edward William Nelson in Omilteme, Guerrero, Mexico under the scientific name Lepus insonus, the Omilteme cottontail was soon after reclassified as a member of the genus Sylvilagus, the cottontail rabbits. It is closely related to the Mexican cottontail (S. cunicularius) and the desert cottontail (S. audubonii); the former species overlaps in distribution with the Omilteme cottontail.
The Omilteme cottontail is considered one of the most endangered mammal species in the world, and is only known from a few specimens. Once listed by the International Union for Conservation of Nature and Mexican authorities as critically endangered, it is now considered a data deficient species. From the early 1900s up until the 1990s, no confirmed sightings of the cottontail were recorded, but two individuals were discovered in 1998, and more were found through the 2020s using camera traps. It is threatened by poaching and habitat destruction, and much about its natural history is unknown.
From the Wikipedia article “Omilteme cottontail” (en.wikipedia.org/w/index.php?title=Omilteme_cottontail&oldid=1360714642), by Wikipedia contributors, licensed under CC BY-SA 4.0 (creativecommons.org/licenses/by-sa/4.0). This block is kept separate from our own text.
Is the omilteme cottontail endangered?
The omilteme cottontail is listed as Data Deficient on the IUCN Red List: it has too little data for its risk to be assessed.
Category via Wikidata (CC0). Find the full assessment on the IUCN Red List. See all Data Deficient species. What the categories mean.
How is the omilteme cottontail classified?
- kingdomAnimalia
- phylumChordata
- classMammalia
- orderLagomorpha
- familyLeporidae
- genusSylvilagus
- SpeciesSylvilagus insonus (Nelson, 1904)
Synonyms Lepus insonus
Other names and names in other languages (14)
- Omiltemi cottontailEnglish
- Omiltemi rabbitEnglish
- Omiltemi rabbitEnglish
- أرنب أوملتيميArabic
- králík NelsonůvCzech
- Omilteme-BaumwollschwanzkaninchenGerman
- Conejo De OmiltemiSpanish
- omiltemenkaniiniFinnish
- オミルテメワタオウサギJapanese
- OmiltemekaninNorwegian Bokmål
- OmiltemikatoenstaartkonijnDutch
- królak samotniczyPolish
- Coelho-de-omiltemiPortuguese
- Амильтемский кроликRussian
Relatives of the omilteme cottontail
Other species in the same genus Sylvilagus.

Eastern cottontail
Sylvilagus floridanus

Swamp rabbit
Sylvilagus aquaticus
Brush rabbit
Sylvilagus bachmani

Common tapeti
Sylvilagus brasiliensis

Desert cottontail
Sylvilagus audubonii

Mountain cottontail
Sylvilagus nuttallii
CompareOmilteme cottontail vs Eastern cottontailOmilteme cottontail vs Swamp rabbitOmilteme cottontail vs Brush rabbitOmilteme cottontail vs Common tapeti
Common questions
Answered only where our data holds the answer.
How big is the omilteme cottontail?
An adult omilteme cottontail weighs 3 kg, according to values recorded on Wikidata.
Is the omilteme cottontail endangered?
The omilteme cottontail is listed as Data Deficient on the IUCN Red List, meaning it has too little data for its risk to be assessed.
What kind of animal is the omilteme cottontail?
The omilteme cottontail (Sylvilagus insonus) belongs to the family Leporidae in the order Lagomorpha.
Sources and how to cite this page
Data as of 2026-11-11. How this page is put together.
- An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles · CC0 1.0 · E096-269
Myhrvold, N.P., Baldridge, E., Chan, B., Sivam, D., Freeman, D.L. & Ernest, S.K.M. (2015) An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96: 3109. https://doi.org/10.1890/15-0846R.1. Data: https://doi.org/10.6084/m9.figshare.3563457.v1 - Catalogue of Life eXtended Release · CC BY 4.0 · 2026-10-16 XR
Catalogue of Life (2026). Catalogue of Life eXtended Release, version 2026-10-16 XR. Catalogue of Life Foundation, Amsterdam, Netherlands. https://doi.org/10.48580/dgzlf - EltonTraits 1.0: species-level foraging attributes of the world's birds and mammals · CC0 1.0 · 1.0
Wilman, H., Belmaker, J., Simpson, J., de la Rosa, C., Rivadeneira, M.M. & Jetz, W. (2014) EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95: 2027. https://doi.org/10.1890/13-1917.1. Data: https://doi.org/10.6084/m9.figshare.3559887.v1 - Wikidata · CC0 1.0 · 2026-11-11
Wikidata contributors. Wikidata. https://www.wikidata.org (data retrieved via the Wikidata Query Service). - Wikipedia (English) · CC BY-SA 4.0 · 2026-11-11
Wikipedia contributors. Wikipedia, The Free Encyclopedia. https://en.wikipedia.org (text under CC BY-SA 4.0; each block names its article and revision).
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CreatureData. (2026). Omilteme cottontail (Sylvilagus insonus). Retrieved from https://creaturedata.com/animals/omilteme-cottontail
“Omilteme cottontail (Sylvilagus insonus).” CreatureData, 2026, https://creaturedata.com/animals/omilteme-cottontail.
@misc{omilteme_cottontail_2026,
title = {Omilteme cottontail (Sylvilagus insonus)},
author = {{CreatureData}},
year = {2026},
url = {https://creaturedata.com/animals/omilteme-cottontail},
note = {Data as of 2026-11-11}
}