Many, certainly many primates. Our ability to understand animal intelligence is limited by or ability to ask appropriate questions, so we tend to underestimate

Many, certainly many primates. Our ability to understand animal intelligence is limited by or ability to ask appropriate questions, so we tend to underestimate intelligence outside of the primate space. Here's an excellent book on this topic: https://www.goodreads.com/book/show/30231743-are-we-smart-enough-to-know-how-smart-animals-are https://www.goodreads.com/book/show/30231743-are-we-smart-en...