{"id":41193,"date":"2024-08-14T11:02:42","date_gmt":"2024-08-14T09:02:42","guid":{"rendered":"http:\/\/5984a8ec-6e38-48e1-9404-b00d4b72e2ef"},"modified":"2024-08-14T12:27:26","modified_gmt":"2024-08-14T10:27:26","slug":"why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans","status":"publish","type":"rss_feed","link":"https:\/\/c01.purpledshub.com\/bbcwildlife\/rss_feed\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans\/","title":{"rendered":"Why do some animals have slit-shaped pupils, rather than round ones like humans?"},"content":{"rendered":"<p class=\"rssexcerpt\">Why some animals have slit-shaped pupils in their eye, while others &#8211; like humans &#8211; have round <\/p><p class=\"rssauthor\">By <\/p><p class=\"rssbyline\">Published: Wednesday, 14 August 2024 at 09:02 AM<\/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>Ever noticed that some animals have slit-shaped pupils in their eyes? This gives them a number of advantages, says Stuart Blackman.<\/strong><\/p><p>\u00a0 Slit-shaped pupils have a far greater range of contraction and expansion than circular ones, so suit species, such as cats and geckos, that are active both day and night. <\/p><ul><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/animal-vision-how-do-animals-see\">Animal vision: how do animals see?<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/mantis-shrimp-eyes\">Mantis shrimp have the most complex eyes in the animal kingdom. Here\u2019s why<\/a><\/li><li><a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/marine-animals\/why-vanadis-bristle-worms-have-such-big-eyes\">This marine worm\u00a0has eyes 20 times heavier than the rest of its head. Why? Sex, apparently<\/a><\/li><\/ul><p>Slits may be vertical or horizontal. Herbivores with side-mounted eyes (<a href=\"https:\/\/www.countryfile.com\/wildlife\/mammals\/native-british-sheep-breeds-and-how-to-recognise-them\">sheep<\/a> and <a href=\"https:\/\/www.countryfile.com\/animals\/horses\/suffolk-punch\">horses<\/a>, for example) usually have horizontal ones, which provide a panoramic view of approaching predators. <\/p><p>Their eyes even rotate in their sockets so that the slits remain horizontal when the animal puts its head down to feed. <\/p><p>On the other hand, vertical slits enable predators with forward-facing eyes to best judge precise distances to prey, though circular pupils do the job better for larger predators, such as <a href=\"https:\/\/www.discoverwildlife.com\/animal-facts\/mammals\/facts-about-lions\">lions<\/a> and humans, with eyes set higher above the ground. <\/p> <\/body><\/html>\n<hr class=\"no-tts wp-block-separator\"\/>","protected":false},"excerpt":{"rendered":"<p>Why some animals have slit-shaped pupils in their eye, while others &#8211; like humans &#8211; have round <\/p>\n","protected":false},"author":24,"featured_media":41194,"template":"","categories":[1],"acf":{"readingTimeMinutes":"< 1"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans.jpg",2120,1415,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-768x513.jpg",768,513,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-1024x683.jpg",800,534,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-1536x1025.jpg",1536,1025,true],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/44\/2024\/08\/why-do-some-animals-have-slit-shaped-pupils-rather-than-round-ones-like-humans-2048x1367.jpg",2048,1367,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":"Why some animals have slit-shaped pupils in their eye, while others - like humans - have round","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/rss_feed\/41193"}],"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\/41194"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/media?parent=41193"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcwildlife\/wp-json\/wp\/v2\/categories?post=41193"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}