Communication is the process of exchanging information through an agreed sign system. It is a spontaneous and complex process, while successful communication is considered when all participants are successfully understood. Communication between animals as a complex process of information exchange takes place between members of different species, and an example of this can be the symbiosis of organisms where each organism benefits from the other. Reproduction and survival is a primary part of animal-conditioned behavior due to an increased chance of survival, and is shaped by natural selection. This paper will discuss the various communication tools that animals use in different situations as well as the different biological environments in which these animal species find themselves. Of the four main communication signs, which are visual, auditory, chemical and tactile, lesser-known communication signs such as the somatosensory system, magnetoreception, thermoreception, electroreception and echolocation will also be addressed. Visual signs are important in animals that are active during the day and live at a short distance, and these are body movements, colors, appearance (crest). Auditory signs (sound) are extremely adaptable to environmental conditions. The next communication sign is chemical (sense of smell) and is extremely developed in almost all animals. There are also tactile signals that are more limited than other types of signals due to the sheer proximity of the animals. In the animal world, all means of communication are equally important because certain species of animals are able to use only one means of communication while most animals have the ability to use at least three means of communication. From all of the above, I believe that the study of animal species in general as well as their communication is of paramount importance for their survival and the survival of mankind. The role of man in this research is crucial only if it does not disrupt their way of life but helps them to preserve and protect species due to their endangerment. The loss of biodiversity also has a negative impact on humans, and in order to reduce it, many countries are enacting regulations and measures to protect species and habitats.