Smithsonian National Museum of Natural History, North American Mammals

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  Lagomorpha · Leporidae · Lepus alleni

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Lepus alleni



Antelope Jackrabbit



Order: Lagomorpha
Family: Leporidae

Click to see adaptations.   
Image of Lepus alleni
Click to enlarge. (74 kb)

Conservation Status: Least Concern.


Antelope Jackrabbits are nocturnal and crepuscular, and almost never vocalize. They are probably the fastest runners of their genus, with a top speed of 72 km per hour. They flash their white rumps somewhat as pronghorns do when they are running. Their ears are white on the outside, and longer than average. Typical of hares, and in contrast to rabbits, Antelope Jackrabbits give birth to well-developed young who are fully furred, with their eyes open, and able to hop.

Also known as:
Allen's Hare, Allen's Jackrabbit, Wandering Jackrabbit, Blanket Jack, Saddle Jack, Mexican Jackrabbit, Burro Jack, Jackass Rabbit

Sexual Dimorphism:
None

Length:
Average: 622 mm
Range: 553-670 mm

Weight:
Average: 3,800 g
Range: 2,700-5,900 g

References:

Mearns, E.A., 1890.  Description of supposed new species and subspecies of mammals from Arizona, p. 294.  Bulletin of the American Museum of Natural History, 2:277-307.

Links:

Mammal Species of the World (opens in a new window).

Mammalian Species, American Society of Mammalogists' species account *
* PDF reader available here (opens in a new window).

Distribution of Lepus alleni

Skull of Lepus alleni
Click to enlarge. (17kb)

Image of Lepus alleni
Click to enlarge. (107kb)

 
Bones and Teeth

Lepus alleni
Front (anterior) view of right elbow joint while extended. Click to enlarge. (10kb)

Lepus alleni
Internal (medial) view of right elbow joint while partially flexed. Click to enlarge. (9kb)

 

Lepus alleni
Right upper third and fourth (right to left) premolars, with dentine stippled and enamel unshaded. Click to enlarge. (18kb)