> Ovis dalli
Ovis dalli (Dall's sheep; Stone's sheep; Fannin's sheep; dall sheep)
The Dall sheep (originally Dall's sheep), Ovis dalli, is a species of sheep native to northwestern North America, ranging from white to slate brown in color and having curved yellowish brown horns. Its closest relative is the more southern subspecies, Stone sheep (also spelled Stone's sheep) (Ovis dalli stonei), which is a slaty brown with some white patches on the rump and inside the hind legs. Research has shown the use of these subspecies designations is questionable.
Uniqueness Scale: Similiar (0)
Uniqueness & Vulnerability Scale: Similiar & Secure (0)
Unique & Vulnerable (100)
|Adult Weight  ||138.67 lbs (62.90 kg)|
|Birth Weight  ||6.21 lbs (2.82 kg)|
|Female Weight  ||106.70 lbs (48.40 kg)|
|Male Weight  ||170.64 lbs (77.40 kg)|
|Weight Dimorphism  ||59.9 %|
|Female Maturity  ||1 year 10 months|
|Male Maturity  ||1 year 9 months|
|Gestation  ||5 months 23 days|
|Litter Size  ||1|
|Litters / Year  ||1|
|Maximum Longevity  ||20 years|
|Weaning  ||4 months 9 days|
MapsLink to MapNorth America;
Institutions (Zoos, etc.)
Species recognized by Grubb P., 22-Apr-2004, ITIS Global: The Integrated Taxonomic Information System in
Attributes / relations provided by ♦ 1Ovis dalli
, R. Terry Bowyer and David M. Leslie, Jr., MAMMALIAN SPECIES No. 393, pp. 7 (1992) ♦ 2
de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits.
Journal of Evolutionary Biology 22(8):1770-1774 ♦ 3Making The Forest And Tundra Wildlife Connection ♦ 4Exploring the Denali Food Web
, ParkWise, National Park Service ♦ 5
Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database
of the Natural History Museum, London ♦ 6
Nunn, C. L., and S. Altizer. 2005. The Global Mammal Parasite Database
: An Online Resource for Infectious Disease Records in Wild Primates. Evolutionary Anthroplogy 14:1-2.
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 gis.wwfus.org/wildfinder
Range map provided by Patterson, B. D., G. Ceballos, W. Sechrest, M. F. Tognelli, T. Brooks, L. Luna, P. Ortega, I. Salazar, and B. E. Young. 2007. Digital Distribution Maps of the Mammals of the Western Hemisphere, version 3.0. NatureServe
, Arlington, Virginia, USA.
Data provided by NatureServe in collaboration with Bruce Patterson, Wes Sechrest, Marcelo Tognelli, Gerardo Ceballos, The Nature ConservancyMigratory Bird Program, Conservation InternationalCABS, World Wildlife FundUS, and Environment CanadaWILDSPACE.