Animals give and receive information in different ways. One way common among many land creatures is the use of scent,or odour, and the sense of smell to detect it. Each species of such animals has its own odour and uses it to communicate; for example, individuals may use their odour to let others know where they are and whether they are ready to mate . some female butterflies,for instance, give out an odour that the males of their species can smell more than 3 kilometres away!