Making the assumption that if cognition was to be found in non-human species, it would most likely be in the ones that were most similar to ourselves - bonobos. In this modern age experiment, a test is being conducted to exercise the hand-eye coordination of bonobos and whether they can understand an end goal.
On a side note: this ape seems right at home in the video game world. But I am still not seeing the importance of teaching him how to play Pacman. Now Donkey-Kong, that's a game I think he would like.