What is Dall sheep?
{{Speciesbox | image =2005 04 27 1582 Dall Sheep.jpg | status = | status-ref = | status_system = IUCN3.1 | taxon = Ovis dalli dalli | authority = | range_map = |synonyms= | synonyms_ref= }} The '''Dall sheep''' or '''Dall's sheep''' is a subspecies of [[Thinhorn sheep]]. They usually eat grass and other plants.<ref name=FWS>{{cite web|url=https://www.fws.gov/refuge/arctic/sheep.html|title=Dall Sheep|publisher=United States Fish and Wildlife Service|accessdate=July 23, 2021|archive-date=July 23, 2021|archive-url=https://web.archive.org/web/20210723164942/https://www.fws.gov/refuge/arctic/sheep.html|url-status=dead}}</ref> They live in northwestern [[North America]], in [[Canada]] and [[Alaska]].<ref name=BC>{{cite web|url=https://www.for.gov.bc.ca/hfd/library/documents/bib46265.pdf|publisher=British Columbia Ministry of Environment, Lands and Parks|accessdate=July 23, 2021|title=Thinhorn sheep in British Columbia}}</ref><ref name=Alaska>{{cite web|title=Dall Sheep (''Ovis dalli dalli'')|url=http://www.adfg.alaska.gov/index.cfm%3Fadfg%3Ddallsheep.main|publisher=Alaska Department of Fish and Game|accessdate=July 23, 2021}}</ref><ref name=NPS>{{cite web|url=https://www.nps.gov/dena/learn/nature/dallsheep.htm|accessdate=July 23, 2021|title=Dall Sheep|publisher=United States National Park Service}}</ref> ==Appearance== These sheep are about 1.5 m high and can weigh up to 110 kg. The female sheep have small horns but the male sheep have larger horns that twist more as they get older. The horns are tan in color. The wool of Dall's sheep is almost pure white.<ref name=Yukon /> The sheep's horns grow fastest in warm weather and slowest in cold weather. This puts rings in the horns called annuli. The number of rings shows how old the sheep is.<ref name= Alaska /> The other kind of thinhorn sheep, the [[stone sheep]], can breed with Dall sheep. These thinhorn sheep are sometimes called Fannin's sheep.<ref name=Yukon>{{cite web|url=https://yukon.ca/en/thinhorn-sheep|publisher=Government of Yukon|accessdate=July 2