Elephant Language  

I've always thought elephants were incredibly intelligent. So I'm not surprised

Abstract thought may be present in other animals.

I think singing would be more interesting than speech.

Elephants can also give humans names with close bonds even though wild. Having lived in the wild for a long time, two elephants communicating with each other made the same tones and then approached me. I observed this for a while. Every time they came close they'd use the same tones. So, that was my name and their way of talking about me...

Humans think Aliens will be impressed by them. I think Aliens will be more interested in animals.

Whales also have names. Are you sure dolphins don't as well. That's the issue. No sources just assertions based on nothing.