'This sense is found only among two major groups of animals:  the arthropods & vertebrates'
hearing
THE SENSES: This sense is found only among two major groups of animals:  the arthropods & vertebrates
This sense is found only among two major groups of animals:  the arthropods & vertebrates
This sense is found only among two major groups of animals:  the arthropods & vertebrates
THE SENSES
hearing
THE SENSES