When people create medicines or other products that are meant to help us, they want to make sure that they are safe to use. One of the ways they do this is by testing the product on animals before allowing people to use it. Rodents, like mice and rats, are often used for these tests because they are tiny, easy to find, and reproduce quickly.
Scientists will give the rodents a very small amount of the product and then watch them closely for any signs that the product might be harmful. They might check to make sure the rodents are eating and drinking normally and that they are walking and moving around like they should be. They might also take blood samples or do other tests to see if the product is affecting the rodents in any way.
The scientists are careful to make sure the rodents are as happy and healthy as possible during the testing. They give them comfortable cages with plenty of food and water and they try to make sure the rodents don't get sick or hurt. Sometimes, the rodents are given a small amount of pain medicine to make sure they don't feel any discomfort during the testing.
The scientists use the information they gather from the testing to make sure the product is safe for people to use. If they find any problems, they will work to fix them before allowing the product to be sold to people. While it might seem sad that the rodents are used for testing, it is important to remember that the scientists are doing everything they can to make sure the product is safe and that they are treating the rodents with care and respect.