I recently listened to the audiobook "Beyond Words" by Carl Safina, I believe on the recommendation of an HN comment. If you're interested in the intelligence,

I recently listened to the audiobook "Beyond Words" by Carl Safina, I believe on the recommendation of an HN comment. If you're interested in the intelligence, empathy, and minds of animals, I can heartily recommend this book. The last third or so of the book covered Orcas (and some whales and dolphins) and it was pretty amazing. I particularly liked that he covered some of the stories that are not quite scientific in nature, while calling them out as such. The book will definitely leave you with the lingering feeling that minds and awareness are not quite as simple and clear cut as we might believe them to be.