{"id":41982,"date":"2024-09-11T15:33:18","date_gmt":"2024-09-11T13:33:18","guid":{"rendered":"http:\/\/fa9582ee-f194-4276-b02a-7474e0866de9"},"modified":"2024-09-11T16:29:05","modified_gmt":"2024-09-11T14:29:05","slug":"discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/rss_feed\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom\/","title":{"rendered":"Discover an animal with 5 hearts, a heart that can regrow &#8211; and other fascinating and weird cardiac facts from the animal kingdom"},"content":{"rendered":"<p class=\"rssexcerpt\">From multiple hearts to an animal who can regrow its heart, here are some amazing cardiac facts from the natural world <\/p><p class=\"rssauthor\">By <\/p><p class=\"rssbyline\">Published: Wednesday, 11 September 2024 at 13:33 PM<\/p><hr class=\"no-tts wp-block-separator\"\/><?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<!DOCTYPE html PUBLIC \"-\/\/W3C\/\/DTD HTML 4.0 Transitional\/\/EN\" \"http:\/\/www.w3.org\/TR\/REC-html40\/loose.dtd\">\n<html><body><p><strong>In the diverse world of animal physiology, some creatures have evolved remarkably intricate circulatory systems to meet their unique biological needs. Among these adaptations are animals with multiple hearts, a feature that enhances their ability to circulate blood effectively through their bodies<\/strong>.<\/p><h2 class=\"wp-block-heading\">4 animals with multiple hearts<\/h2><p>Octopus<\/p><figure class=\"wp-block-video\"><video controls=\"\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/09\/GettyImages-1191344830-1.mp4\"\/><figcaption class=\"wp-element-caption\">Octopus on the move\/Getty Videos<\/figcaption><\/figure><p>The octopus is perhaps the most famous multi-heart animals. Octopuses pump their <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/blood-facts\">blood<\/a> around their circulatory system using three hearts instead of one. While a \u2018systemic\u2019 heart supplies the animal\u2019s body, two \u2018branchial\u2019 hearts supply each of the two <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/fish-gills\">gills<\/a> where the blood is oxygenated. The squid also has three hearts, which work in the same way.<\/p><ul><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/squid-vs-octopus\">Squid vs octopus: what&#8217;s the difference between these multiple-limbed sea creatures?<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/video-of-curled-octopus-changing-colour\">Watch this incredible rare video of an octopus changing colour on a Welsh beach<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/insects-invertebrates\/why-do-female-octopuses-die-after-reproducing\">Why do female octopuses die after reproducing?<\/a><\/li><\/ul><h3 class=\"wp-block-heading\">Earthworms<\/h3><figure class=\"wp-block-image size-full\"><figcaption class=\"wp-element-caption\">Macro shot of earthworms roaming through dirt\/Getty Images<\/figcaption><\/figure><p>OK, this one might be a stretch, as technically <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/insects-invertebrates\/facts-about-earthworms\" target=\"_blank\" rel=\"noreferrer noopener\">earthworms<\/a> don&#8217;t have hearts, but they do have 5 aortic arches (pseudohearts). Much like hearts, these pseudohearts help blood circulate around the body \u2013 only in their case, it&#8217;s about squeezing, rather than pumping.<\/p><h3 class=\"wp-block-heading\">Hagfish<\/h3><figure class=\"wp-block-video\"><video controls=\"\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/09\/hagfish.mp4\"\/><figcaption class=\"wp-element-caption\">How many hearts do hagfish have? Getty Videos<\/figcaption><\/figure><p>The hagfish is not only famous for being the <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/what-is-the-slimiest-animal-discover-a-terrifying-animal-of-the-deep-that-will-give-you-nightmares\">slimiest animal<\/a> on earth &#8211; producing over 1 litre of <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/mucus-and-slime-explained\">slime<\/a> in under 0.1 seconds &#8211; but also for having five hearts. Yes, you read that right, five hearts! <\/p><p>Its complex circulatory system features a three-chambered systemic heart, along with two accessory hearts, one portal heart, and one caudal heart. The systemic heart is responsible for pumping blood through the gills and then distributing it via arteries throughout the rest of the body. The accessory hearts, which are situated on the venous side of the circulation, help return blood to the systemic heart.<\/p><p>And their hearts are so incredible that they can keep on beating for 36 hours without any oxygen.<\/p><p>Cuttlefish<\/p><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2311\" height=\"1298\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/04\/What-is-a-cephalopod.jpg\" alt=\"a cuttlefish is a cephalopod\" class=\"wp-image-98908\"\/><\/figure><p>Like its <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/what-is-a-cephalopod\">cephalopod<\/a> cousins (the octopus and the squid), cuttlefish also have three hearts to help them cope with the conditions of deep-sea life. Two of these pump blood to its gills, while the third circulates blood around the body. The blood is blue, thanks to the copper-rich protein it contains, known as hemocyanin, which transports oxygen around the body. Mammal blood is red due to its iron-rich haemaglobin, which does the equivalent job.<\/p><h2 class=\"wp-block-heading\">Animal with the biggest heart<\/h2><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2235\" height=\"1341\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/09\/blue-whale.jpg\" alt=\"\" class=\"wp-image-109849\"\/><figcaption class=\"wp-element-caption\">Getty images<\/figcaption><\/figure><p>It&#8217;s no wonder that the biggest heart belongs to the biggest animal, the blue whale &#8211; and its the length of a person. Measuring an impressive\u00a05 feet long, 4 feet wide, and 5 feet tall, it weighs about 181kg. <\/p><h2 class=\"wp-block-heading\">The animal that can regrow a heart<\/h2><figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"2121\" height=\"1414\" src=\"https:\/\/c02.purpledshub.com\/uploads\/sites\/62\/2024\/09\/zebra-fish.jpg\" alt=\"\" class=\"wp-image-109850\"\/><figcaption class=\"wp-element-caption\">Getty images<\/figcaption><\/figure><p>We have all heard about the lizard that can regrow a tail, or the <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/insects-invertebrates\/turbellaria-flatworms\">flatworms<\/a>&#8216; remarkable ability to repair and regenerate. Dice a flatworm any which way and each fragment will in time become a fully functional creature. However have you heard of the animal that can regrow a heart? Yes really&#8230;<\/p><p>In 2002 scientists found <a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.1077857\">zebrafish were able to fully regenerate their hearts<\/a> within 2 months of being damaged. Now that is an envious skill&#8230;<\/p><ul><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/facts-about-animals\">Incredible animal facts: Discover extraordinary truths about the natural world<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/masters-of-regeneration-these-death-defying-animals-can-regrow-body-parts-better-than-deadpool\">Masters of regeneration: these death-defying animals can regrow body parts better than Deadpool<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/autotomy-explained\">Autotomy explained: how and why some animals shed body parts so they can grow a replacement<\/a><\/li><\/ul> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p>From multiple hearts to an animal who can regrow its heart, here are some amazing cardiac facts from the natural world <\/p>\n","protected":false},"author":24,"featured_media":41983,"template":"","categories":[1],"acf":{"readingTimeMinutes":"3"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-scaled.jpg",2050,2560,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-240x300.jpg",240,300,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-768x959.jpg",768,959,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-820x1024.jpg",800,999,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-1230x1536.jpg",1230,1536,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/09\/discover-an-animal-with-5-hearts-a-heart-that-can-regrow-and-other-fascinating-and-weird-cardiac-facts-from-the-animal-kingdom-1640x2048.jpg",1640,2048,true]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"From multiple hearts to an animal who can regrow its heart, here are some amazing cardiac facts from the natural world","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed\/41982"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media\/41983"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media?parent=41982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/categories?post=41982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}