Effective audible communication is not necessarily either language or speech. Banging a stick against a tree or howling qre both effective audible communication methods, but neither are language or speech. Chattering like chimps do and which sasquatches are said to do? I'm not sure. Clicking like dolphins do? Again, I'm no sure. But what I am sure about chattering and clicking is that they do not express abstractions like economic or psychological theory.
Sasquatch "samarai" sounds? This appears to go beyond chatter, but remains a mystery.
What is also proven is that both language and abstraction are learned, unlike emotion. A dog, gopher, beaver, or feral human can get angry or frightened, but none can begin to understand even the emotions they feel or other abstractions until they learn about them through abstract language. A dog can understand many human words; sit, stay, come, heel, etc. Try teaching your dog about macro-economics.
That might well be because the audible languages of other species is not speech or the expression of abstract thought. For example, wolves or coyotes howl to express, over long distances (thus demonstrating a complete lack of body language), that they are present, and that their presence expresses territorial ownership of the area. We know this so fully as to have created electronic calling devices which mimic these calls so to lure them in to defend their territory from other perceived wolves or coyotes. We have created these communication devices for, among many other motivations, the purposes of commerce, a completely foreign economic abstraction to wolves and coyotes that affects their very lives dramatically.