Communication is a process of transferring information from one entity to another. Communication processes are sign-mediated interactions between at least two agents which share a repertoire of signs and semiotic rules. Communication is commonly defined as "the imparting or interchange of thoughts, opinions, or information by speech, writing, or signs".

Communication is a process whereby information is enclosed in a package and is channeled and imparted by a sender to a receiver via some medium. The receiver then decodes the message and gives the sender a feedback. All forms of communication require a sender, a message, and an intended recipient, however the receiver need not be present or aware of the sender's intent to communicate at the time of communication in order for the act of communication to occur. Communication requires that all parties have an area of communicative commonality. There are auditory means, such as speech, song, and tone of voice, and there are nonverbal means, such as body language, sign language, paralanguage, touch, eye contact, through media, i.e., pictures, graphics and sound, and writing.

• Behaviour: Communication
  bbc.co.uk
  Article on the signs and signals animals use to communicate and how they interpret them.
• Baboon Communication
  apa.org
  Article by Beth Bazar examining how baboons have voice and communication skills but not the "theory of mind" to understand how their communications will affect others.
• Interdisciplinary Center for Bioacoustics
  unipv.it
  CIBRA provides extensive links to other sites on underwater bioacoustics and marine mammals, general bioacoustics, equipment, consultancy, services and related projects and organizations.