[mdavidn]

How do you know crows and dolphins lack language? Because they don’t use a syntax like ours?

[minerjoe]

A theory is that dophins communicate by transmitting 3D information. They see with sonar and can use the same mechanisms to transfer 3D information. Probably vastly superior to the grunts of us apes for many tasks.

[easygenes]

I think the implication was dolphins have language but not tool use.