{"id":852,"date":"2014-01-21T07:30:58","date_gmt":"2014-01-21T07:30:58","guid":{"rendered":"http:\/\/www.123fakta.com\/da\/?p=852"},"modified":"2026-03-19T10:38:47","modified_gmt":"2026-03-19T10:38:47","slug":"faits-sur-les-ours-polaires","status":"publish","type":"post","link":"https:\/\/www.123fakta.com\/fr\/facts-about-polar-bears","title":{"rendered":"Faits sur les ours polaires"},"content":{"rendered":"<ol>\n<li><strong>Peau noire :<\/strong>\u00a0La couleur de la fourrure de l'ours polaire peut varier d'un blanc presque crayeux \u00e0 l'ivoire, mais sa peau est enti\u00e8rement noire, ce qui lui permet d'absorber la chaleur du soleil.<\/li>\n<li><strong>P\u00f4le Nord :<\/strong>\u00a0Bien que dans les livres et m\u00eame les films, les ours polaires et les <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-pingouins\/\">pingouins<\/a> On voit souvent les manchots c\u00f4te \u00e0 c\u00f4te, mais ce n'est pas le cas en r\u00e9alit\u00e9, car les manchots ne se trouvent qu'autour de l'Antarctique (p\u00f4le Sud) et les ours polaires autour de l'Arctique (p\u00f4le Nord). Plus pr\u00e9cis\u00e9ment, les ours polaires ne se trouvent que dans les cinq pays suivants : le Groenland, la Norv\u00e8ge, la Russie, les \u00c9tats-Unis et le Royaume-Uni : Groenland, Norv\u00e8ge, Russie, \u00c9tats-Unis et Canada.<\/li>\n<li><strong>Grands pr\u00e9dateurs :<\/strong>\u00a0Les ours polaires sont les plus grands ours vivants et \u00e9galement les plus grands ours vivants. <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-predateurs\/\">pr\u00e9dateurs<\/a> qui peuvent chasser sur terre. Un ours polaire peut atteindre 3 m\u00e8tres de long et peser jusqu'\u00e0 700 kg. La hauteur moyenne de ses \u00e9paules est de 133 cm<\/li>\n<li><strong>Meilleur nageur :<\/strong>\u00a0Bien que tous les ours soient de grands nageurs, l'ours polaire est sans doute le meilleur ; il peut nager jusqu'\u00e0 160 km sans se reposer et, dans un cas, un ours a \u00e9t\u00e9 observ\u00e9 en train de nager 320 km sans s'arr\u00eater ! Les ours polaires peuvent \u00e9galement plonger<\/li>\n<li><strong>Naissance :<\/strong>\u00a0Avec <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-pandas\/\">ours panda<\/a>Les ours polaires sont les deux seules esp\u00e8ces d'ours \u00e0 na\u00eetre avec de la fourrure.<\/li>\n<li><strong>Kuld :<\/strong>\u00a0Les ours polaires donnent g\u00e9n\u00e9ralement naissance \u00e0 deux oursons \u00e0 la fois. Cependant, des oursons uniques et des tripl\u00e9s peuvent \u00e9galement na\u00eetre, bien que cela soit souvent li\u00e9 \u00e0 la sant\u00e9 de la m\u00e8re.<\/li>\n<li><strong>Grandir :<\/strong>\u00a0Les oursons restent avec leur m\u00e8re jusqu'\u00e0 2 \u00bd ans pour apprendre \u00e0 chasser et \u00e0 se d\u00e9brouiller dans l'environnement arctique.<\/li>\n<li><strong>Mammif\u00e8res marins :<\/strong>\u00a0L'ours blanc est la seule esp\u00e8ce d'ours class\u00e9e parmi les mammif\u00e8res marins, c'est-\u00e0-dire un mammif\u00e8re qui passe la majeure partie de sa vie dans l'oc\u00e9an.<\/li>\n<li><strong>Pattes en fourrure :<\/strong>\u00a0Les ours polaires sont les seuls \u00e0 avoir de la fourrure sous les pattes et entre les orteils. En effet, les ours perdent la majeure partie de leur chaleur par les pattes (et les ours polaires vivent dans un climat froid).<\/li>\n<li><strong>L'hibernation :<\/strong>\u00a0Les ours polaires n'hibernent pas - seuls les ours bruns et les ours noirs am\u00e9ricains le font. Cependant, les ourses polaires enceintes \"nichent\" et entrent dans une sorte de p\u00e9riode de repos pendant la gestation<\/li>\n<\/ol>\n<figure id=\"attachment_7805\" aria-describedby=\"caption-attachment-7805\" style=\"width: 990px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7805\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2.jpg\" alt=\"La pr\u00e9sence de glace est n\u00e9cessaire pour que les ours polaires puissent attraper des phoques\" width=\"1000\" height=\"2092\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2.jpg 1000w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-143x300.jpg 143w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-489x1024.jpg 489w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-768x1607.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-734x1536.jpg 734w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-979x2048.jpg 979w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoernes-habitat-2-6x12.jpg 6w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-7805\" class=\"wp-caption-text\">Attribution : David + Martin Lopatka + U.S. Fish and Wildlife Services - Flickr.com<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Sans glace, les ours polaires ne peuvent pas attraper de phoques, leur principale source de nourriture.<\/strong><\/em><\/p>\n<h2>Chasse et alimentation des ours polaires<\/h2>\n<ul>\n<li><strong>L'odorat :<\/strong>\u00a0L'odorat de l'ours polaire est environ 100 fois sup\u00e9rieur \u00e0 celui de l'homme. Par exemple, un ours polaire peut sentir une proie \u00e0 32 km de distance et \u00e9galement sentir un phoque mort sous 90 cm de glace !<\/li>\n<li><strong>Est :<\/strong>\u00a0Bien que les ours polaires disposent de loin des plus vastes territoires de chasse de tous les ours, ils ont aussi des limites car ils d\u00e9pendent de la glace pour attraper les phoques. Lorsque la glace se retire en \u00e9t\u00e9, ils doivent parfois nager des centaines de kilom\u00e8tres pour suivre la glace et trouver de la nourriture. S'ils sont captur\u00e9s sur la terre ferme en \u00e9t\u00e9, ils sont oblig\u00e9s d'attendre que l'eau g\u00e8le \u00e0 nouveau \u00e0 l'automne, car ils attrapent rarement des phoques en pleine mer<\/li>\n<li><strong>Lard :<\/strong>\u00a0L'estomac d'un ours polaire peut contenir 68 kg de viande ou de graisse et il a besoin de 2 kg de graisse par jour pour survivre. Cependant, les habitudes alimentaires de l'ours polaire - et les occasions de manger - sont g\u00e9n\u00e9ralement caract\u00e9ris\u00e9es par une alternance de je\u00fbne et de repas copieux. Lorsque la chasse est bonne, les ours polaires pr\u00e9f\u00e8rent se nourrir uniquement de graisse et peuvent m\u00eame manger jusqu'\u00e0 50 kg en un seul repas !<\/li>\n<li><strong>L'alimentation :<\/strong>\u00a0Bien que les ours polaires se nourrissent principalement de phoques, ce sont des chasseurs opportunistes qui mangent presque tout ce qu'ils peuvent trouver ou attraper. Les rongeurs font partie de leur r\u00e9gime alimentaire, <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-oiseaux\/\">oiseaux<\/a>, <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-oeufs\/\">\u0153ufs<\/a>, <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-poissons\/\">poisson<\/a>, <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-baleines\/\">baleines<\/a>les plantes (y compris les algues et les baies) et les d\u00e9chets humains<\/li>\n<li><strong>Pr\u00e9dateur alpha :<\/strong>\u00a0Les ours polaires se trouvent au sommet de la cha\u00eene alimentaire (on les appelle \"pr\u00e9dateurs alpha\"), ce qui signifie, entre autres, qu'ils n'ont pas d'ennemis naturels (c'est-\u00e0-dire des pr\u00e9dateurs qui se nourrissent d'ours polaires).<\/li>\n<\/ul>\n<figure id=\"attachment_7807\" aria-describedby=\"caption-attachment-7807\" style=\"width: 990px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-7807\" src=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoerne-fakta-2.jpg\" alt=\"Fait : L&#039;ours polaire est la plus grande esp\u00e8ce d&#039;ours et le plus grand pr\u00e9dateur vivant qui chasse sur terre.\" width=\"1000\" height=\"668\" srcset=\"https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoerne-fakta-2.jpg 1000w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoerne-fakta-2-300x200.jpg 300w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoerne-fakta-2-768x513.jpg 768w, https:\/\/www.123fakta.com\/wp-content\/uploads\/isbjoerne-fakta-2-18x12.jpg 18w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption id=\"caption-attachment-7807\" class=\"wp-caption-text\">Attribution : Oleg. - Flickr.com<\/figcaption><\/figure>\n<p style=\"text-align: center;\"><em><strong>Fait : En plus d'\u00eatre la plus grande esp\u00e8ce d'ours, l'ours polaire est le plus grand pr\u00e9dateur vivant capable de chasser sur terre. Voici deux ours polaires en train de se battre<\/strong><\/em><\/p>\n<h2>Mythes et id\u00e9es fausses<\/h2>\n<ul>\n<li><em><strong>\"Les ours polaires couvrent leur museau noir avec leurs pattes lorsqu'ils chassent pour \u00e9viter d'\u00eatre rep\u00e9r\u00e9s par leurs proies.<\/strong><\/em>\u00a0(ils ne le font pas)<\/li>\n<li><strong>\"Les poils creux des ours polaires dirigent la lumi\u00e8re UV vers leur peau noire\"<\/strong>\u00a0(les cheveux ne le font pas et cela a \u00e9t\u00e9 test\u00e9 et r\u00e9fut\u00e9 par un physicien nomm\u00e9 Daniel Koon).<\/li>\n<li><em><strong>\"Les ours polaires utilisent des outils<\/strong><\/em>\u00a0(ils ne le font pas - m\u00eame si d'autres esp\u00e8ces d'ours le font)<\/li>\n<li><em><strong>\"L'ours polaire vit en symbiose avec le renard arctique\".<\/strong><\/em>\u00a0(selon ce mythe, l'ours polaire b\u00e9n\u00e9ficie de la vigilance du renard arctique en mati\u00e8re de chasse et de menaces \u00e9ventuelles, et en retour, l'ours polaire partage sa nourriture avec le renard arctique. Cependant, ce n'est pas vrai ; les renards arctiques suivent les ours polaires et se r\u00e9galent de leurs restes, mais les ours polaires trouvent cela plus ennuyeux que b\u00e9n\u00e9fique).<\/li>\n<li><em><strong>\"Les ours polaires ont la patte gauche<\/strong><\/em>\u00a0(ce n'est pas le cas ; les scientifiques ont m\u00eame constat\u00e9 - par observation - que les ours polaires n'ont pas de pr\u00e9f\u00e9rence pour leurs membres et les utilisent tous de la m\u00eame mani\u00e8re).<\/li>\n<\/ul>\n<p>Vous pouvez \u00e9galement consulter notre <a href=\"https:\/\/www.123fakta.com\/fr\/faits-sur-les-ours\/\">article sur les ours ici<\/a>.<\/p>","protected":false},"excerpt":{"rendered":"<p>Black skin:\u00a0A polar bear&#8217;s fur can vary in color from almost chalky white to ivory &#8211; but its skin is completely black, which helps it absorb heat from the sun North Pole:\u00a0Although in books and even movies, polar bears and penguins are often seen side by side, this is not the case in reality, as &#8230; <a title=\"Faits sur les ours polaires\" class=\"read-more\" href=\"https:\/\/www.123fakta.com\/fr\/facts-about-polar-bears\" aria-label=\"En savoir plus sur Facts about polar bears\">Lire plus<\/a><\/p>","protected":false},"author":1,"featured_media":7804,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[67,68],"tags":[120],"class_list":["post-852","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-animals","category-terrestrial-animals","tag-adsense"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Fakta om isbj\u00f8rne - F\u00f8de, adf\u00e6rd, habitat osv.<\/title>\n<meta name=\"description\" content=\"Fact: Polar bears can smell their prey from 32 km away and a dead seal under 90 cm of ice! 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