The Interspecies Language (ISL) is a method for communicating that includes a visual language, as tonal language, a training protocol that integrates them, and an enabling apparatus. The ISL visual language communicates through a display that creates a “picture” of a sentence on a touchscreen. This visual display embodies the ISL's syntax and structures how the user employs it to build sentences. Sentences are constructed by dragging icons, which are pictures or abstract images representing objects or concepts, into the structured areas of the visual array. The ISL tonal language communicates through a structured series of tones that are grouped so that tones within a grouping are members of a class of objects or concepts. The tones are sounded when an icon is placed into the visual array in the course of building a sentence. The ISL is deployed through an apparatus that includes a touchscreen, computer, chute, and industrial controls. With its clear structure for the animal's response, the ISL provides a method for meaningful, two-way communication between animals and humans or between humans.