Some rodents are considered pests. There are too few people who would find mice and rats attractive. None of us would be happy to see them in our homes either. On the other hand, mice are another species that can detect and predict when danger is coming up. For example, thanks to incredible senses of smell, rats can ‘smell’ avian flu. The first study was carried out in the USA, Philadelphia, at the Monell Chemical Senses Center. During research scientists managed to find out how the mouse reacts to components and chemicals found in disease laden bird. As we can see, rats as well as mice can be of great use to the human race – their noses are sensitive enough and can be used to help us in many other spheres of life, too.