Animal Communication:
* Visual: Birds using elaborate displays, fish changing color, bees performing "waggle dances"
* Auditory: Whales singing complex songs, birdsong, dog barking
* Chemical: Pheromones used by insects and mammals for mating and territory marking
* Tactile: Ants touching antennae, primates grooming each other
Other Communication Systems:
* Sign Language: A visual language using hand gestures, facial expressions, and body language.
* Braille: A tactile system for reading and writing used by the blind.
* Morse Code: A system using dots and dashes to transmit messages.
* Traffic Signals: Visual signals used to regulate traffic flow.
* Computer Networks: Digital signals used to communicate between computers.
While human language is complex and sophisticated, it's important to remember that communication is a fundamental aspect of life, and many different species and systems have evolved to facilitate it.