Question

what is the definition of language? What is the evidence, pro and con, as to whether nonhuman animals have a capacity for language?

Answer 1

Definition of language:

The method of human communication, either spoken or written, consisting of the use of words in a structured and conventional way.

Parrots can and do talk human words, some in context, plus understand more than they verbalize. Primates can use sign language. Scientist Lily said dolphins communicate five different ideas to each other in five different voices at the same time. Depending on your definition, just about all animals have some sort of language of their own.