Why rats?<\/h4>\n
They can contribute something that the other technologies can\u2019t, at least for the areas we train them in. Their sense of smell and their trainability is on a par with dogs\u2019. But it\u2019s the rats\u2019 small size that really makes a difference.<\/p>\n
At APOPO, we work with the African giant pouched rat [Cricetomys ansorgei<\/em>]. We taught the rats to detect landmines, because they\u2019re too small, too light, to set off a landmine. We\u2019re teaching them to detect the scent of illegally smuggled wildlife in shipping ports, because they can reach the containers stacked up high on top one another.<\/p>\n For my research training rats for search and rescue, the main reason is that they can get into the small, tight areas of a debris site. Search and rescue dogs typically just go around debris sites, whereas we\u2019re hoping the rats can actually go inside, through all the rubble, because they\u2019re so small.<\/p>\n Any application has to be in response to a humanitarian challenge, and it has to need the unique capabilities of our rats to help. If there\u2019s already [other] technology available, and it\u2019s affordable, we\u2019re not going to train our rats just for the fun of it.<\/p>\n We use positive reinforcement to train them on a basic sequence of behaviour. So, here it\u2019s to search for a human, indicate to us that they\u2019ve found them, and then return to where they were released from.<\/p>\n [Training] starts off in a really basic environment: a small, empty room. Then we gradually expand and increase the complexity so it because more like real life. We can start adding in debris and making the training area look more like an actual collapsed building site.<\/p>\n They need to trigger a switch, which makes a noise. Currently, we put them in a vest that has a little ball on its collar, containing a microswitch. The rats are trained to pull the ball when they find someone, which triggers the microswitch and lets out a beep.<\/p>\n Pulling the ball isn\u2019t a natural behaviour for them, but they can be trained in a process we call shaping. We start by putting the vest with the ball on them. The rats are naturally quite curious, so when they have the ball hanging there, you can see they\u2019re kind of like, \u2018What is this?\u2019<\/p>\n Read more rodent research:<\/strong><\/p>\n In the beginning, we\u2019re just reinforcing them for touching the ball at all. Then, as is standard for shaping, you would stop reinforcing for just touching so they realise, \u2018Oh, I\u2019m not getting reinforced any more\u2019. Then they\u2019ll try harder [to get the reward]. That typically leads them to pull on the ball, and we have to really quickly reward them, so they know that is the target behaviour. Then, in a similar way, we can shape up until they\u2019re pulling it for two to three seconds, so it\u2019s a really strong signal to us.<\/p>\n Of course, in the field we won\u2019t be able to see the rats, or hear them. So, we\u2019re working with a group of engineers to develop a multi-function backpack that will be linked up to our computer, so we can be notified when the rats pull the ball. We\u2019ll be able to know exactly where they are, because the backpacks should have a location transmitter, as well.<\/p>\n We\u2019ve talked about this a lot, because we will only do the training with live people and don\u2019t know how they\u2019ll react to dead bodies until they\u2019re in a real scenario. However, dog trainers have told us that the odour profile of a person that\u2019s alive, compared to a person that\u2019s dead, is very different. Dogs can tell the difference between a living and deceased person from around three to four hours after death.<\/p>\n We thought that maybe we\u2019d have to train the rats using some sort of smell that we might be able to get our hands on \u2013 it\u2019s hard to know what to call it, but would we need the smell of death, basically.<\/p>\n But the dog trainers have told us we don\u2019t have to do that, because the odour change between living and dead people is so different, it\u2019s not a problem.<\/p>\n We just started training in August 2021, and we still have to run training trials outside the research environment. We\u2019re working with a search and rescue group called GEA<\/a>, who are based in Turkey, a country prone to earthquakes. We\u2019re hoping that by next year we\u2019ll be able to take the rats to Turkey for trials there, but in terms of going to real disaster sites, real collapsed buildings\u2026 it\u2019s very, very difficult to tell.<\/p>\n APOPO\u2019s landmine research started in 1998, and its first operational trials ran in 2003 and 2004. Our tuberculosis detection research began in 2003, and the rats began operating in 2007. For these projects it costs, on average, around \u20ac6,000 [roughly \u00a35,175] to fully train one rat so they\u2019re ready for operations.<\/p>\n We\u2019re currently training seven for search and rescue, although they\u2019ll have to take turns using the one backpack!<\/p>\n Read more ways ingenious animals are helping humans:<\/strong><\/p>\n By Amy Barrett Published: Saturday, 18 June 2022 at 12:00 am Researchers have successfully trained rats to detect landmines, sniff out tuberculosis and even drive cars, but their next challenge \u2013 to find survivors in a collapsed building \u2013 could be their bravest yet. We spoke to Dr Donna Kean, behavioural researcher at APOPO, an […]<\/p>\n","protected":false},"author":24,"featured_media":14171,"template":"","categories":[1],"acf":{"readingTimeMinutes":"5"},"uagb_featured_image_src":{"full":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble.jpg",1200,798,false],"thumbnail":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble-150x150.jpg",150,150,true],"medium":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble-300x200.jpg",300,200,true],"medium_large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble-768x511.jpg",768,511,true],"large":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble-1024x681.jpg",800,532,true],"1536x1536":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble.jpg",1200,798,false],"2048x2048":["https:\/\/c01.purpledshub.com\/uploads\/sites\/42\/2022\/06\/these-search-and-rescue-rats-can-find-earthquake-victims-amongst-the-rubble.jpg",1200,798,false]},"uagb_author_info":{"display_name":"importmanagerhub@sprylab.com","author_link":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/author\/importmanagerhubsprylab-com\/"},"uagb_comment_info":0,"uagb_excerpt":"By Amy Barrett Published: Saturday, 18 June 2022 at 12:00 am Researchers have successfully trained rats to detect landmines, sniff out tuberculosis and even drive cars, but their next challenge \u2013 to find survivors in a collapsed building \u2013 could be their bravest yet. We spoke to Dr Donna Kean, behavioural researcher at APOPO, an…","_links":{"self":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed\/14170"}],"collection":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/rss_feed"}],"about":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/types\/rss_feed"}],"author":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/users\/24"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media\/14171"}],"wp:attachment":[{"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/media?parent=14170"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c01.purpledshub.com\/bbcsciencefocus\/wp-json\/wp\/v2\/categories?post=14170"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}How do you train a rat to do these things?<\/h4>\n
![\"""\"](\""https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/4\/2022\/06\/IMG3171-Dr-Donna-Kean-and-RescueRAT-Jo-7add341.jpg?quality=90&resize=620%2C412"\" "\\"\"\"\\"\/")
<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>What happens when they find someone?<\/h4>\n
How can they tell the difference between those who are alive and those who aren\u2019t?<\/h4>\n
![\"""\"](\""https:\/\/images.immediate.co.uk\/production\/volatile\/sites\/4\/2022\/06\/CAT6862-Search-and-Rescue-1b073a3.jpg?quality=90&resize=620%2C412"\" "\\"\"\"\\"\/")
<\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/source><\/picture><\/div>When will these rats be out in the field?<\/h4>\n
","protected":false},"excerpt":{"rendered":"