I think I've heard before that cat sounds are mutually learned - the cat makes random noises until the human responds appropriately, remembers the noise for nex

I think I've heard before that cat sounds are mutually learned - the cat makes random noises until the human responds appropriately, remembers the noise for next time, repeat until you recognize that particular yowl as meaning "I'm hungry". But because of that, there's no shared language - cat owners can't understand other people's cats.