Kidang kutub: Béda antara owahan

'''reindeerkuva''' ''(Rangifer tarandus),'' uga dikenal minangka '''Caribou''' ing [[Amérikah Lor|Amerika Utara]], <ref name="Flagstad2">{{Cite journal|last=Flagstad|first=Oystein|last2=Roed|first2=Knut H|year=2003|title=Refugial origins of reindeer (''Rangifer tarandus'' L) inferred from mitochondrial DNA sequences|url=http://genome-lab.ucdavis.edu/LabMeeting/Lab_Meeting_Papers/temporary/Flagstad2003Evol.pdf|journal=Evolution|volume=57|pages=658–670|doi=10.1554/0014-3820(2003)057[0658:roorrt]2.0.co;2|pmid=12703955|archive-url=https://web.archive.org/web/20060904024954/http://genome-lab.ucdavis.edu/LabMeeting/Lab_Meeting_Papers/temporary/Flagstad2003Evol.pdf|archive-date=4 September 2006|access-date=4 January 2013}}</ref> yaiku spesies [[Kancil|kidang]] karo [[distribusi circumpolar]], native kanggo [[Arktik]], sub-artik, tundra, Boréal, lan wilayah pegunungan saka lor Eropah, Siberia, lan North Amerika Iki kalebu populasi pendhudhuk lan migrasi. ''Ukuran komplotan Rangifer'' beda-beda gumantung ing macem-macem wilayah geografis.

Reindeer minangka [[Kéwan nggayemi|ruminan]], weteng papat kamar. Umume mangan [[Lumut kerak|sayur lumut]] ing mangsa adhem, utamane lumut reindeer&nbsp;- adaptasi unik ing antarane mamalia - mung mamalia gedhe sing bisa metabolisme lumut amarga bakteri lan protzoa khusus ing usus. <ref name="McCloskey2011">{{Citation|last=McCloskey|first=Erin|title=Wolves in Canada|pages=72–82|year=2011|chapter=Caribou|publisher=Lone Pines|isbn=978-1-55105-872-6}}</ref> Dheweke mung kewan (kajaba sawetara [[Siput|gastropoda]] ) ing endi [[Ènzim|enzim]] lichenase, sing ngilangi lichenin dadi [[glukosa]], ditemokake. <ref>{{Cite book|url=https://books.google.com/books?id=ymGPfl_HDv8C&pg=PA363|title=Henderson's Dictionary of Biology|last=Lawrence, Eleanor|publisher=Pearson Benjamin Cummings Prentice Hall|year=2008|isbn=978-0-321-50579-8|pages=363–|archive-url=https://web.archive.org/web/20160510185334/https://books.google.com/books?id=ymGPfl_HDv8C&pg=PA363|archive-date=10 May 2016}}</ref> Nanging, dheweke uga mangan godhong willow lan birch, uga [[Cyperaceae|sedge]] lan [[Poaceae|suket]] .

Dheweke wis misuwur mangan tanduk sing tiba, bisa uga kalsium.  Ana uga sawetara bukti sing nuduhake manawa ana kesempatan, utamane ing musim semi yen stres gizi, bakal mangan rodentik cilik (kayata lemmings ), <ref>[https://web.archive.org/web/20111107145338/http://www.hww.ca/hww2.asp?id=91 Lemmings] at [[Hinterland Who's Who]]</ref> iwak (kayata Arctic char ), lan [[Endhog|endhog manuk]] . <ref>Anand-Wheeler, Ingrid (2002) ''Terrestrial Mammals of Nunavut''. Nunavut Wildlife Management Board. {{ISBN|1-55325-035-4}}.</ref> Reindeer sing dikempalken karo Chukchis wis dikenal ngonsumsi jamur kanthi semangat ing pungkasan mangsa panas.

Sajrone musim panas Arktik, yen isih awan, reindeer ngowahi pola turu saka siji sing diselarasake karo srengenge dadi pola ultradian sing turu nalika mbutuhake panganan. <ref name="Hickok2018">{{Cite web|url=https://www.livescience.com/62870-summer-solstice-animals.html|title=How Does the Summer Solstice Affect Animals?|last=Hickok|first=K.|date=21 June 2018|website=[[Live Science]]|access-date=22 June 2018}}</ref>

[[Barkas:Reindeer-on-the-rocks.jpg|jmpl| Reindeer ngadeg ing salju kanggo nyegah serangga getih.]]