Animals transmit messages animals and signal each Other in many ways. Facial expressions and body language convey a lot of meanings. The 
way an animal stands or holds its ears tells its rival or another animal in the group something about its intentions. Many animals also exchange visual signals.Similarly, animals convey messages through the sounds they make, and the scents they release. Animals often anoint their territories with scent marks that other animals can read as they pass by. So, animals are really very clever at transmitting messages without talking like we do!
