Ethological zoosemiotics, as seen in  Chapter 1, is the primary and the most classical field of inquiry for zoosemiotics, i.e., the one that actually deals with the semiosic processes occurring among animals. It was also mentioned that the field can be divided into an early stage (eEZ) and a modern one (mEZ). In its early phase, zoosemiotics was mostly conceived as an umbrella term for gathering different approaches on animal communication. And "communication" was still the key-word, as in this stage there was a clear emphasis on this specific process, rather than the broader semiosis. Classical ethology and the then very trendy behaviouristic schools, finally, provide the scientific framework for (and document the uncertain semiotic identity of) this type of EZ.