So, you are saying that the speaker implied that animals don't communicate???
What a painfully egomaniacal and tiny-minded statement that is. All nature, all animals, insects, fungus and plants communicate in some way. Everyday science is blown-away by discovering more of the communication that occurs. Even individual cells and bacteria communicate. Atoms communicate so that molecules can function as a coherent whole. Subatomic particles somehow pass information so that the atom remain stable. Hell, it seems that the entire universe is nothing but data and the transference and communication of that.
The only void seems to be in that particular speakers brain; and fortunately your dear son caught-on.