Listened to an radio interview with Peter Gabriel briefly about some recordings he did with monkeys accompanying him on the piano. Now before we get the snark and ridicule hear me out.
The conclusions that they were reaching was that there was a much stronger degree of sentience that was previously thought. To further expand, maybe they are much more like us, but limited by there comunication skills.
It certainly raised more questions than it answered, and the musical recordings were amazing.
Oh, and another aspect of the interview dealing with this, if I remember it correctly dealt with the need or idea of having an Interspecies Internet.
Found it, here is a link.
http://hereandnow.wbur.org/2013/07/09/gabriel-interspecies-internet