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widely distributed in United States except northwest and far west regions (同)Sylvilagus floridanus

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ワタオウサギ(綿毛のような白い毛のウサギ;米国産)

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/10/27 16:38:27」(JST)

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"Cottontail" redirects here. For other uses, see Cottontail (disambiguation).

Cottontail rabbits are among the 17 lagomorph species in the genus Sylvilagus, found in the Americas.^[1]

In appearance, most cottontail rabbits closely resemble the wild European rabbit (Oryctolagus cuniculus). Most Sylvilagus species have stub tails with white undersides that show when they retreat; giving them their name, "cottontails". This feature is not present in some cottontails (for example, the underside of the brush rabbit's tail is gray), nor is it unique to the genus (for example, the European rabbit also has a white scut).

The genus is widely distributed across North America, Central America, and northern and central South America, though most species are confined to particular regions. Most (though not all) species live in nests called forms, and all have altricial young.

Cottontail rabbits show a greater resistance to myxomatosis than European rabbits.^[2]

Eating Mechanics[edit]

California eight-week-old Desert cottontail eating a carrot

Unlike the squirrel and chipmunk that eat sitting up on their hind legs, and can hold food with their front paws while spinning it in circles to devour it quickly, the desert cottontail, like all cottontails, eat on all fours, and can only use its nose to move and adjust the position of the food that it places directly in front of its front paws on the ground. The cottontail rabbit will turn the food with its nose to find the cleanest part of the vegetation (free of sand and inedible parts) to begin its meal. The only time a cottontail uses its front paws to enable eating, is when vegetation is above its head on a living plant. The cottontail will lift its paw to bend the branch to bring the food within reach.

Cottontails are rarely found out of their burrows looking for food on windy days. This phenomena is due to the fact that the wind interferes with their hearing capabilities. Hearing an oncoming predator approaching is their primary defense mechanism.

Cottontails are very sociable animals within their peer group

Species[edit]

Genus Sylvilagus

Subgenus Microlagus
- Sylvilagus bachmani – Brush rabbit

Subgenus Sylvilagus
- Sylvilagus audubonii – Desert cottontail
- Sylvilagus cognatus – Manzano mountain cottontail
- Sylvilagus cunicularius – Mexican cottontail
- Sylvilagus floridanus – Eastern cottontail
- Sylvilagus graysoni – Tres Marias rabbit
- Sylvilagus nuttallii – Mountain cottontail
- Sylvilagus obscurus – Appalachian cottontail or rarely Allegheny cottontail
- Sylvilagus robustus – Robust cottontail
- Sylvilagus transitionalis – New England cottontail

Subgenus Tapeti
- Sylvilagus aquaticus – Swamp rabbit
- Sylvilagus brasiliensis – Tapeti
- Sylvilagus dicei – Dice's cottontail
- Sylvilagus insonus – Omilteme cottontail
- Sylvilagus palustris – Marsh rabbit
- Sylvilagus varynaensis – Venezuelan lowland rabbit

Subgenus unknown
- Sylvilagus mansuetus – San Jose brush rabbit

Gallery[edit]

Desert Cottontail (Sylvilagus audubonii) in submissive posture anticipating food
From behind with white tail easily visible
On alert
California high Desert Cottontail resting on a full stomach
Mother and Juvenile Cottontail enjoying a carrot dinner

Rabbits and hares portal

References[edit]

^ ^a ^b Hoffman, R. S.; Smith, A. T. (2005). "Genus Sylvilagus". In Wilson, D. E.; Reeder, D. M. Mammal Species of the World (3rd ed.). Johns Hopkins University Press. pp. 207–211. ISBN 978-0-8018-8221-0. OCLC 62265494.
^ Carter, G.R.; Wise, D.J. (2006). "Poxviridae". A Concise Review of Veterinary Virology. Retrieved 2006-06-13.

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The apicomplexan order Haemosporida is a clade of unicellular blood parasites that infect a variety of reptilian, avian and mammalian hosts. Among them are the agents of human malaria, parasites of the genus Plasmodium, which pose a major threat to human health. Illuminating the evolutionary history
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Root JJ1, Bosco-Lauth AM2, Bielefeldt-Ohmann H3, Bowen RA2.
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During 2013, a novel avian-origin H7N9 influenza A virus (IAV) emerged in China and subsequently caused large economic and public health burdens. We experimentally infected three common peridomestic wild mammals with H7N9 (A/Anhui/1/2013) IAV. Striped skunks exhibited the highest burden of disease f
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Genetic characterization of interleukins (IL-1α, IL-1β, IL-2, IL-4, IL-8, IL-10, IL-12A, IL-12B, IL-15 and IL-18) with relevant biological roles in lagomorphs.

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Japanese Journal

Daytime habitat selection by introduced eastern cottontail Sylvilagus floridanus and native European hare Lepus europaeus in northern Italy

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日本産科婦人科學會雜誌 54(8), 1036-1046, 2002-08-01
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Habitat use by cottontail rabbits across multiple spatial scales in Mississippi

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Related Pictures

Eastern Cottontail Pictureof Eastern Young Cottontail Distress | Calling Cottontail rabbit - search in pictures New England Cottontail - Redorbit nuttalls-cottontail Photo 862-26: Young Eastern cottontail Cottontail Pictures, Desert Cottontail

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Cottontail rabbits
	Eastern cottontail rabbit (Sylvilagus floridanus) eats grass, ferns, and leaves
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Infraclass:	Eutheria
Order:	Lagomorpha
Family:	Leporidae
Genus:	Sylvilagus; Gray, 1867
Type species
	Lepus sylvaticus; Bachman, 1837; (=Lepus sylvaticus floridanus J. Allen, 1890)
Species
	16 sp., see text

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[MSW3-1] Hoffman, R. S.; Smith, A. T. (2005). "Genus Sylvilagus". In Wilson, D. E.; Reeder, D. M. Mammal Species of the World (3rd ed.). Johns Hopkins University Press. pp. 207–211. ISBN 978-0-8018-8221-0. OCLC 62265494.

[Carter-2] Carter, G.R.; Wise, D.J. (2006). "Poxviridae". A Concise Review of Veterinary Virology. Retrieved 2006-06-13.

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cottontail