These are giant rats.
They live in Africa.
They have big cheeks for food.
Some rats help people find land mines.
They are very smart heroes!
Can you see their big tails?
These large rats live in Africa.
They have big pouches in their cheeks. They use these to carry food. They like to eat nuts and bugs.
Some rats are called HeroRATs. They help people in many ways. They use their noses to sniff for danger. They can find things hidden under the dirt. They are very smart and helpful animals.
Giant pouched rats live in Africa. They have large cheek pouches. They use these to carry food. These rats are omnivores. This means they eat both plants and small animals. They especially like to eat insects and palm nuts.
Some of these rats are called HeroRATs. They do very important work. They use their strong sense of smell to find danger. They can sniff out TNT. TNT is a type of explosive used in land mines. The rats are light. They can walk near mines without setting them off.
A group called APOPO trains these rats. They start training at four weeks old. The rats learn to find a smell. They get a banana treat for finding it. They also help find sickness. They sniff samples to find tuberculosis. This is a disease that can make people sick. The rats are very fast at this. They can test 100 samples in 20 minutes. This is much faster than a lab.
Giant pouched rats are large rodents from sub-Saharan Africa. These animals belong to the genus Cricetomys. They are known for having very large cheek pouches. These pouches help them carry food. They are nocturnal, which means they are active at night. They are also omnivores. This means they eat both plants and small animals. They especially like to eat insects and palm nuts.
These rats have a very special way of working with people. They are trained to be HeroRATs. They use their acute sense of smell to find things. They can sniff out TNT, which is a type of explosive. Because they are light, they do not trigger land mines. This makes them safe to use in dangerous areas. They can even find land mines hidden under the soil.
Training these rats is a careful process. It was developed by a Belgian man named Bart Weetjens. Training starts when the rats are only four weeks old. First, they get used to humans and different sounds. Then, they learn to associate a clicker with a food reward. They might get banana or banana-peanut paste. They must nose a hole containing TNT for five seconds. Finally, they practice wearing a harness on a lead outdoors.
HeroRATs do more than just find explosives. They also help find a sickness called tuberculosis. They sniff sputum samples to look for the germ. These rats are much faster than people in a lab. They can test 100 samples in just 20 minutes. A lab worker might take four days to do that. In Tanzania and Ethiopia, they help screen for this disease. They are very good at finding sickness early.
There are several different types of these giant rats. The Gambian pouched rat lives from Senegal to Kenya. The Southern giant pouched rat lives in places like Zimbabwe and Kenya. Another type is the Kivu giant pouched rat from Southern Africa. Emin's pouched rat lives in Tropical Africa and Madagascar. These rats are quite large in size. Their weights and lengths can vary between the different species. They are very important animals in many African countries.
Giant pouched rats belong to the genus Cricetomys. They are large muroid rodents found in sub-Saharan Africa. These animals are famous for their large cheek pouches. These pouches allow them to carry food easily. They are nocturnal, which means they are active during the night. They are also omnivores. This means their diet includes both vegetation and small animals. They have a particular taste for palm nuts and insects.
Scientists have changed how they classify these animals. For a long time, they were placed in the family Muridae. This is the same family as true rats. However, recent molecular studies have changed this view. These studies place them in the family Nesomyidae. This family is part of an ancient radiation of African and Malagasy muroids. There are several distinct species within this genus. The Gambian pouched rat lives from Senegal to Kenya and from Angola to Mozambique. The Southern giant pouched rat lives in Zimbabwe, Kenya, Tanzania, Zambia, and the Democratic Republic of Congo. The Kivu giant pouched rat lives in Southern Africa. Finally, Emin's pouched rat lives in Tropical Africa and Madagascar.
These rats have a very high reproductive rate. Females can produce up to 10 litters every year. The gestation period, or the time the young grow inside the mother, lasts between 27 and 36 days. When the young are born, there are usually between one and five at a time. The mothers typically have between six and eight nipples to feed them.
Some of these rats are trained to perform life-saving work. They are known as HeroRATs. This training was developed by a Belgian man named Bart Weetjens. A nonprofit social venture called APOPO is responsible for training them in Tanzania. The training begins when the rats are only four weeks old. At this age, handlers touch them to help them get used to humans. They also expose the rats to many different sights and sounds. The rats learn to associate a clicker sound with a food reward. They are often given banana or banana-peanut paste as a treat.
After they learn the basics, the rats begin specific scent training. They learn to nose a hole containing TNT for five seconds. This helps them identify the scent of explosives. They then practice finding the correct hole among a line of many holes. Eventually, they learn to wear a harness and practice outdoors on a lead. They practice finding inactive mines hidden under the soil. To finish their training, they must pass a blind test. They must find all the mines in an area seeded with inactive mines. The handlers do not know where the mines are during this test. If they succeed, they are certified as bomb-sniffing rats. These rats are safe because they are light enough not to trigger antipersonnel mines.
HeroRATs also help detect the disease tuberculosis. They do this by sniffing sputum samples for Mycobacterium tuberculosis. These rats are much faster than traditional laboratory methods. A rat can test 100 samples in only 20 minutes. A laboratory technician using conventional microscopy might take up to four days to do the same work. The rats are also very accurate. In secondary screenings, they reassess 52% of initially negative tests as being positive. In some cases, the rats detected the disease before clinical tests could. They have been used to screen for the disease in Tanzania and Ethiopia.
Humans have many different relationships with these rodents. In many African countries, they are valued as an important food item. They can also be easily tamed to be kept as pets. However, they have also caused concerns regarding health. In 2003, they were associated with an outbreak of monkeypox in the USA. Because of this, they are now banned from being imported into the United States. Despite these complexities, their ability to detect scent makes them incredible tools for human safety.
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