Animalia > Chordata > Mammalia > Artiodactyla > Bovidae > Ovis > Ovis dalli

Ovis dalli (Dall's sheep; Stone's sheep; Fannin's sheep; dall sheep)

Wikipedia Abstract

The Thinhorn sheep (Ovis dalli) is a species of sheep native to northwestern North America, ranging from white to slate brown in colour and having curved yellowish brown horns. There are two subspecies: the nominate Dall sheep or Dall's sheep and 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.
View Wikipedia Record: Ovis dalli


EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.8
EDGE Score: 1.92


Adult Weight [1]  138.671 lbs (62.90 kg)
Birth Weight [2]  6.215 lbs (2.819 kg)
Female Weight [1]  106.704 lbs (48.40 kg)
Male Weight [1]  170.639 lbs (77.40 kg)
Weight Dimorphism [1]  59.9 %
Diet [3]  Herbivore
Diet - Plants [3]  100 %
Forages - Ground [3]  100 %
Female Maturity [2]  1 year 10 months
Male Maturity [2]  1 year 9 months
Gestation [2]  5 months 23 days
Litter Size [2]  1
Litters / Year [2]  1
Maximum Longevity [2]  20 years
Snout to Vent Length [4]  5.15 feet (157 cm)
Weaning [2]  4 months 9 days


Protected Areas


Prey / Diet

Prey / Diet Overlap


Canis lupus (Wolf)[5]
Culiseta alaskaensis (Mosquito)[5]
Ursus arctos (Grizzly Bear)[5]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Ovis dalli, R. Terry Bowyer and David M. Leslie, Jr., MAMMALIAN SPECIES No. 393, pp. –7 (1992)
2de 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
3Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
4Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
5Making The Forest And Tundra Wildlife Connection
6Exploring the Denali Food Web, ParkWise, National Park Service
7Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
8Nunn, 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 Wildfinder Database
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0