Most folks still don't understand, Judi.
Dolphins, crows, octopuses, elephants have surprisingly exceptional intelligence that rivals some primates'.
On dolphins:
"...based on years of research that has shown dolphins and whales have large, complex brains and a human-like level of self-awareness....
Ethics expert Prof Tom White, from Loyola Marymount University, Los Angeles, author of In Defence of Dolphins: The New Moral Frontier, said dolphins were "non-human persons".
...
"We're saying the science has shown that individuality - consciousness, self-awareness - is no longer a unique human property..."
...
Psychologist Dr Lori Marino, from Emory University in Atlanta, told how scientific advances had changed the view of the cetacean brain. "We went from seeing the dolphin/whale brain as being a giant amorphous blob that doesn't carry a lot of intelligence and complexity to not only being an enormous brain but an enormous brain with an enormous amount of complexity, and a complexity that rivals our own."
https://www.bbc.com/news/world-17116882