. Animal communication, and indeed the understanding of the animal world in general, is a rapidly growing field, and even in the 21st century so far, many prior understandings related to diverse fields such as personal symbolic name use, animal emotions, animal culture and learning, and even sexual conduct, long thought to be well understood, have been revolutionized. Validation Forms of communication The best known forms of communication involve the display of distinctive body parts, or distinc… (More on Zoosemiotics)